Fixes#45035
This commit addresses a data race issue where refreshCollection was
updating the collection notifier without proper lock protection.
Changes:
- Add UpdateCollection method to CollectionManager with proper locking
- Introduce CollectionOperator pattern for thread-safe collection
updates
- Make setRefreshNotifier private and use it through the operator
pattern
- Update refreshCollection to use the new UpdateCollection method
- Handle collection not found error gracefully in refreshCollection
The CollectionOperator pattern ensures all collection modifications go
through the CollectionManager's lock, preventing concurrent access
issues.
Signed-off-by: Congqi Xia <congqi.xia@zilliz.com>
