E2E: Run review-qa tests without test script abstractions

What does this MR do and why?

Describe in detail what your merge request does and why.

Makes review tests trigger leaner by removing abstractions which are not needed for non orchestrated test execution:

• Use more basic generic CI image instead of QA image
• Run tests with native knapsack runner with plain tag option instead of scenario abstraction
• Update qa gem caching

MR acceptance checklist

This checklist encourages us to confirm any changes have been analyzed to reduce risks in quality, performance, reliability, security, and maintainability.

• I have evaluated the MR acceptance checklist for this MR.

Part of: https://gitlab.com/gitlab-org/quality/team-tasks/-/issues/1034