[Frontend] Add bypass options to a merge request widget

Why are we doing this work

GitLab now supports Merge Request Approval Policy Waivers, allowing organizations to maintain strong security governance while enabling critical automation workflows and exceptions in emergency situations.

This Issue adds bypass widget to a merge request widget

Relevant links

Design 🖌️

Non-functional requirements

• Documentation:
• Feature flag: security_policies_bypass_options
• Performance:
• Testing:

Implementation plan

TBD

Verification steps