chore: remove sample network state permission

[marandaneto]

💡 Motivation and Context

The Android sample app no longer needs to request ACCESS_NETWORK_STATE, so this removes the optional permission from the sample manifest.

💚 How did you test it?

Not run; manifest-only sample cleanup.

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes.
• I updated the docs if needed.
• No breaking change or entry added to the changelog.

If releasing new changes

• Ran pnpm changeset to generate a changeset file

[greptile-apps]

_{Reviews (1): Last reviewed commit: "chore: remove sample network state permi..." | Re-trigger Greptile}