fix(amazonq): auto save the current file when users trigger auto debug commands

[MarcoWang3]

Problem

Amazon Q couldn't make changes to unsaved files. When users apply fix commands to unsaved files, Amazon Q couldn't fix those problems.

Solution

Auto save the file when users clicking on the fix commands.

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[amazon-inspector-ohio]

⏳ I'm reviewing this pull request for security vulnerabilities and code quality issues. I'll provide an update when I'm done

[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.

[amazon-inspector-ohio]

✅ I finished the code review, and didn't find any security or code quality issues.

[leigaol]

please throw when this save function returns false.

[MarcoWang3]

done!