Fix a few readonly 10/n (#56948)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/56948

```
js1 flow-runner codemod flow/transformAllVariance --variance readonly --format-files=false
```

drop-conflicts

landed-with-radar-review

Reviewed By: SamChou19815

Differential Revision: D106144499

fbshipit-source-id: 85493334eae630d3dec7e5920633c076f8f09729