Re-enable RealmProvider progress test

[kraenhansen]

As part of #7029 I had to upgrade to React 19, which introduced a test failure in @realm/react originating from what I believe is batching of setting state from timers: 4b87397

I started refactoring (see the last couple of commits in https://github.com/realm/realm-js/tree/kh/realm-react-progress-tests) but ultimately wasn't able to fix it in the time-box I allotted myself.