### PR Description:
- **File changes in the PR**:
- Integrated the sorting feature to the mongo collections.
- Added the unit test for sorting.
Fixes https://github.com/appsmithorg/appsmith/issues/35842
- **Snapshots**:
**Before resolving bug:**

**After resolving bug:**

<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- **New Features**
- Enhanced the MongoDB plugin to return collection names in a
case-insensitive sorted order, improving predictability and user
experience.
- **Tests**
- Added a new test to validate that collections returned by the plugin
are sorted correctly, ensuring consistent functionality.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->