Add FlaxWhisperForAudioClassification model
_The documentation is not available anymore as the PR was closed or merged._<|||||>@sanchit-gandhi  I have opened new PR. 
<|||||>This actually broke a lot of tests on Flax Whisper, so reverting. Can you re-open the PR and rebase on main so we can see what went wrong?<|||||>@sanchit-gandhi Request you to open this PR. 
<|||||>Hey @raghavanone - unfortunately a PR can't be re-opened after it's been merged. The best thing to do is add commits to the branch and create a new pull request, copying all the details over and providing a link to the original pull request. See https://stackoverflow.com/questions/12674304/github-reopening-a-merged-pull-request for details.