Automatic merge from submit-queue

[Federation] Fix flake in TestUpdateClusterRace

**What this PR does / why we need it**:
Fix #50262

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #50262

**Special notes for your reviewer**:
Although we do locking/unlocking while using protected data in ClusterController, there are chances that `clusterClient` can be deleted as it is a pointer. Also its better to lock/unlock once for the function `UpdateClusterStatus` instead of multiple locks/unlocks.

**Release note**:
```
NONE
```

/assign @madhusudancs 
/cc @dminh @kubernetes/sig-federation-bugs