fix(amazonq): allow subsequent reviews in review tab

[zuoyaofu]

Problem

Subsequent reviews (/review) were not possible after running a review.

Solution

• subsequent reviews are now allowed
• Fix were made to not impact the previous bug fix where review causes two "run code review" chat messages
• Fix were made not to impact previous bug fix to auto-trigger /review from Quick Actions Menu
• Reverts fix(amazonq): Auto-trigger review flow on scan button click #6550

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[github-actions]

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