Adds release-.* to reviews.auto_review.base_branches so PRs targeting
release branches (e.g. release-1.9.2) receive the same auto-review as
PRs targeting main.
* chore: Update .coderabbit.yaml configuration for review processes
- Added pre-merge checks for test coverage, quality, and file naming to enhance testing standards.
* chore: Refine .coderabbit.yaml review instructions for testing standards
- Updated test coverage checks to emphasize the inclusion of corresponding tests for new components and improved clarity on test quality evaluation.
- Adjusted modes for warnings and errors to enhance the review process, ensuring better adherence to testing best practices.
- Introduced a new check for excessive mock usage to promote better test design and reliability.
