ch.qos.logback.classic プラグインはロードされていますが、Eclipse RCP アプリで検出されません Eclipse RCP 製品コンテンツにプラグインを追加します

I was given an Eclipse RCP application which contains a MyApp.product file as you can see here:

Now, if I click on product configuration (highlighted in red) it seems that many plug-ins are missing, e.g. org.jdom2, org.objectweb.asm.tree.analysis and so on:

For this reason, I downloaded their jars. For instance, I downloaded jdom2.jar from this respository clicking on the red button:

Next, I pasted them into eclipse_rcp_dev/plugins directory.

Unfortunately, some plug-ins get detected my Eclipse IDE but others are not (e.g. org.jdom2 still is not detected by Eclipse IDE). Clicking on Add required plug-ins won't solve the issue.

What am I missing? If you need further information, e.g. the manifest file or other stuff, tell me.

EDIT I set a target platform as you can see here (I both created a target platform and added some plug-ins from the file-system):

And activated it:

This is the generated my-target-definition.target file:

<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<?pde version="3.8"?>
<target name="my-target-definition" sequenceNumber="10">
    <locations>
        <location path="C:\Users\quirilea\Desktop\eclipse_rcp_dev\plugins" type="Directory"/>
        <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
            <unit id="org.eclipse.orbit.maven.osgi.all.feature.group" version="4.31.0.v20240227-0900"/>
            <unit id="org.eclipse.orbit.maven.osgi.all.source.feature.group" version="4.31.0.v20240227-0900"/>
            <repository location="https://download.eclipse.org/tools/orbit/simrel/maven-osgi/release/4.31.0/"/>
        </location>
        <location includeAllPlatforms="false" includeConfigurePhase="true" includeMode="planner" includeSource="true" type="InstallableUnit">
            <unit id="org.eclipse.jpt.jaxb.eclipselink.feature.feature.group" version="1.4.203.v202104080213"/>
            <unit id="org.eclipse.jpt.jaxb.feature.feature.group" version="1.5.201.v202301061019"/>
            <unit id="org.eclipse.jpt.jpa.eclipselink.feature.feature.group" version="3.4.101.v202308172102"/>
            <unit id="org.eclipse.jpt.jpa.feature.feature.group" version="3.7.0.v202308172102"/>
            <unit id="org.eclipse.jpt.jpadiagrameditor.feature.feature.group" version="1.2.300.v202307260736"/>
            <unit id="org.eclipse.jsf.feature.feature.group" version="3.13.0.v202308300413"/>
            <unit id="org.eclipse.jst.common.fproj.enablement.jdt.feature.group" version="3.29.0.v202308161955"/>
            <unit id="org.eclipse.jst.enterprise_ui.feature.feature.group" version="3.33.0.v202401080452"/>
            <unit id="org.eclipse.jst.jsf.apache.trinidad.tagsupport.feature.feature.group" version="2.8.0.v202307262303"/>
            <unit id="org.eclipse.jst.server_adapters.ext.feature.feature.group" version="3.4.900.v202402192305"/>
            <unit id="org.eclipse.jst.server_adapters.feature.feature.group" version="3.33.0.v202401292308"/>
            <unit id="org.eclipse.jst.server_ui.feature.feature.group" version="3.4.500.v202401292331"/>
            <unit id="org.eclipse.jst.web_js_support.feature.feature.group" version="3.32.0.v202309190220"/>
            <unit id="org.eclipse.jst.web_ui.feature.feature.group" version="3.33.0.v202402161256"/>
            <unit id="org.eclipse.jst.webpageeditor.feature.feature.group" version="2.12.0.v202307262216"/>
            <unit id="org.eclipse.jst.ws.axis2tools.feature.feature.group" version="1.2.0.v202308010354"/>
            <unit id="org.eclipse.jst.ws.cxf.feature.feature.group" version="1.1.1200.v202311232240"/>
            <unit id="org.eclipse.jst.ws.jaxws.dom.feature.feature.group" version="1.0.600.v202308010354"/>
            <unit id="org.eclipse.jst.ws.jaxws.feature.feature.group" version="1.2.1000.v202311280000"/>
            <unit id="org.eclipse.m2e.feature.feature.group" version="2.6.0.20240220-1109"/>
            <unit id="org.eclipse.m2e.feature.source.feature.group" version="2.6.0.20240220-1109"/>
            <unit id="org.eclipse.m2e.logback.feature.feature.group" version="2.6.0.20240217-1525"/>
            <unit id="org.eclipse.m2e.pde.feature.feature.group" version="2.3.1.20240203-0902"/>
            <unit id="org.eclipse.m2e.pde.feature.source.feature.group" version="2.3.1.20240203-0902"/>
            <unit id="org.eclipse.m2e.sdk.feature.feature.group" version="2.6.0.20240220-1109"/>
            <unit id="org.eclipse.m2e.wtp.feature.feature.group" version="1.6.1.20231024-1618"/>
            <unit id="org.eclipse.m2e.wtp.jaxrs.feature.feature.group" version="1.6.1.20231024-1618"/>
            <unit id="org.eclipse.m2e.wtp.jpa.feature.feature.group" version="1.6.1.20231024-1618"/>
            <unit id="org.eclipse.m2e.wtp.jsf.feature.feature.group" version="1.6.1.20231024-1618"/>
            <unit id="org.eclipse.php.composer.feature.group" version="8.2.0.202311292129"/>
            <unit id="org.eclipse.php.feature.group" version="8.2.0.202311292129"/>
            <unit id="org.eclipse.rap.tools.feature.feature.group" version="3.28.0.20240306-1200"/>
            <unit id="org.eclipse.wildwebdeveloper.embedder.node.feature.feature.group" version="1.0.7.202310251358"/>
            <unit id="org.eclipse.wildwebdeveloper.feature.feature.group" version="1.3.3.202311211923"/>
            <unit id="org.eclipse.wst.common.fproj.feature.group" version="3.7.4.v202308161955"/>
            <unit id="org.eclipse.wst.jsdt.chromium.debug.feature.feature.group" version="0.7.0.v202307190351"/>
            <unit id="org.eclipse.wst.jsdt.feature.feature.group" version="2.4.500.v202307190318"/>
            <unit id="org.eclipse.wst.server_adapters.feature.feature.group" version="3.33.0.v202401292308"/>
            <unit id="org.eclipse.wst.web_js_support.feature.feature.group" version="3.33.0.v202403030558"/>
            <unit id="org.eclipse.wst.web_ui.feature.feature.group" version="3.31.0.v202403030558"/>
            <unit id="org.eclipse.wst.xml_ui.feature.feature.group" version="3.33.0.v202402030243"/>
            <unit id="org.eclipse.wst.xsl.feature.feature.group" version="1.3.1500.v202307260701"/>
            <repository location="https://download.eclipse.org/releases/latest"/>
        </location>
    </locations>
</target>

Many plug-ins are detected properly now:

There are some plug-ins I still can't add, such as ch.qos.logback.classic or ch.qos.logback.core.

How do I solve?