Change the query for querying quota of Cloud Blob Storage.
The original query used new fields, which caused errors in the old version of the server. This PR uses a simpler query to ensure compatibility.
<!-- This is an auto-generated comment: release notes by coderabbit.ai -->
## Summary by CodeRabbit
- **New Features**
- Added the ability to retrieve a workspace's blob storage quota, including both the raw limit and a human-readable format, via a new query.
- **Bug Fixes**
- Updated quota retrieval to use the new blob-specific quota query for improved accuracy.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
52253e9e82