Bug Description:

Hi,
I want to be able to disable some agents using the preference settings by default, using the application setting like this:

"theia": {
    "target": "browser",
    "frontend": {
      "config": {
         "ai-features.agentSettings": {
             "AppTester": {
                 "enable": false
              },
              "ProjectInfo": {
                 "enable": false
              }
          }
      }
    }
}

But the theia agents settings service uses the user scope for load and save, and does not respect the other scope settings.

Additional Information

• Operating System: Mac
• Theia Version: 1.66