feat(amazonq): Adding diff view UX for generated files in Agentic chat

[laileni-aws]

Problem

• Existing UX accepts the generated files without permission check.

Solution

• Added code diff view using VSC native diff functionality, Users can click on the generated files and see the code diff.
• Users can now accept/reject the generated code.
• Close the diff view once user clicks on Accept or Reject.
• Fix: If user clicks on Confirm button to execute the bash command change this to Confirmed state.
• In read tool execution and safe bash command execution use different id: generic-tool-execution in processCustomFormAction as this helps the above step to execute.
• Fix: Removing the Q spinner component if user clicks on reject button or code diff filePath.

Screen.Recording.2025-03-27.at.10.02.27.PM.mov

---

• Treat all work as PUBLIC. Private feature/x branches will not be squash-merged at release time.
• Your code changes must meet the guidelines in CONTRIBUTING.md.
• License: I confirm that my contribution is made under the terms of the Apache 2.0 license.

[github-actions]

• This pull request modifies code in src/* but no tests were added/updated.
  • Confirm whether tests should be added or ensure the PR description explains why tests are not required.
• This pull request implements a feat or fix, so it must include a changelog entry (unless the fix is for an unreleased feature). Review the changelog guidelines.
  • Note: beta or "experiment" features that have active users should announce fixes in the changelog.
  • If this is not a feature or fix, use an appropriate type from the title guidelines. For example, telemetry-only changes should use the telemetry type.

[laileni-aws]

/retryBuilds

[laileni-aws]

/retryBuilds