Fix check scope 6588

[JairoTM-es]

Description (required)

Fixes #6588

What changes did you make and why?

This PR improves the reliability of the Check Pull Request Scope GitHub Actions workflow.

1. Fixed 403 error when posting out-of-scope comments

   • The workflow was failing with HttpError: Resource not accessible by integration (403) when the github-script step attempted to create a comment on a pull request.
   • This happened because the workflow GITHUB_TOKEN did not have sufficient permissions.
   • Updated the workflow permissions to include:

     contents: read
     issues: write
     pull-requests: write
     models: read

     This allows the workflow to create PR comments successfully.

2. Made the AI-based scope detection more deterministic and consistent

   • The same pull request diff was sometimes classified differently across runs.
   • To reduce variability and make outputs stable:
     • Set temperature: 0
     • Limited output using max-tokens: 10
     • Updated the prompt to clearly define:
       • what counts as related vs unrelated changes
       • several examples for both categories
       • a strict requirement for the model to return exactly "yes" or "no" in lowercase, with no extra text
   • These adjustments help ensure that the condition

     if: steps.analyze.outputs.response == 'yes'

     behaves consistently.

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Tests performed (required)

This PR modifies only a GitHub Actions workflow and does not affect the Android application code or UI.

• Verified locally that the YAML syntax is valid.
• Relying on CI to execute the updated workflow on this pull request.
• No device or emulator testing is required for this type of change.

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Screenshots (for UI changes only)

Not applicable — this PR does not introduce UI changes.

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Note: I have reviewed CONTRIBUTING.md as recommended for first-time contributors.