Refactor: Unify patch review API endpoint and payload

[pyob-bot]

Summary of Changes

This pull request refactors the client-side logic for reviewing patches within the dashboard HTML. Specifically, it addresses the following:

• Endpoint Unification: The API endpoint for approving patches has been changed from /api/approve_patch to the more general /api/review_patch.
• Payload Consistency: The request body for approving a patch now explicitly includes action: 'approved', aligning its structure with other patch review actions (e.g., rejection) that already send the action parameter.

Technical Impact

• API Consolidation: This change consolidates the frontend's interaction with patch review functionality under a single, unified /api/review_patch endpoint, simplifying the client-side API call structure.
• Improved Consistency: Ensures that all patch review actions, including approval, send a consistent payload containing the action type, which can streamline backend processing and reduce potential edge cases.
• Backend Alignment: This modification anticipates or reflects a corresponding change on the backend to handle patch approvals through the /api/review_patch endpoint, potentially deprecating a dedicated /api/approve_patch endpoint.
• No User-Facing Impact: This is an internal API interaction change and does not alter the user interface or the functional behavior from an end-user perspective.