Automatic merge from submit-queue (batch tested with PRs 49342, 50581, 50777)

Update RegisterMandatoryFitPredicate to avoid double register.

**What this PR does / why we need it**:
In https://github.com/kubernetes/kubernetes/pull/50362 , we introduced `RegisterMandatoryFitPredicate` to make some predicates always included by scheduler. This PRs is to improve it by avoiding double register: `RegisterFitPredicate` and `RegisterMandatoryFitPredicate` 

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #50360 

**Release note**:

```release-note
None
```