fix(amazonq): Auto-trigger review flow on scan button click

[zuoyaofu]

Problem

• Clicking review button in Amazon Q UI panel only opens chat without starting review process, creating unnecessary friction in the user workflow.

Solution

• Modify review tab open logic to automatically prompt user with review scope selection ("active file" vs "entire project"), matching the exact behaviour of the command /review.

---

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[github-actions]

• This pull request modifies code in src/* but no tests were added/updated.
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[hayemaxi]

CI looks like it's from tech debt and unrelated to PR. LGTM pending approval from your team