Unable to Add Android Project-Level Plugin Dependencies to MAUI

I have tried multiple approaches, but I’m unable to add project-level build.gradle plugin dependencies to MAUI. Specifically, I attempted to integrate the [Instana Android Agent](https://github.com/instana/android-agent) into a MAUI project. While I was able to include the runtime library, the plugin itself could not be integrated.

```
plugins {
id("com.android.application")
id("com.instana.android-agent-plugin")
}
```

The plugin is included in the .aar package but is not applied when running MAUI. It seems that only build.gradle libraries at the app level are successfully included, while project-level plugin dependencies are not being applied.

I’m looking for a way to support the integration of project-level plugins in MAUI, as this behavior seems to affect other plugin-level injections as well.

Start by reproducing the MAUI integration with the Instana Android Agent and compare the app-level library behavior with the project-level build.gradle plugin declarations. Inspect how the .aar package is consumed; done means project-level Android plugins are applied when running MAUI, not only runtime libraries.

Written by the indexing model from the issue text.