Revert RecyclerViewCaptureHelper changes from ag/15083160

Changes in shared code with ListView implementation seem to have
had negative side effects with Telegram. Revert the old onScrollRequested
implementation for now.

Bug: 189475409
Test: Verify gaps missing from telegram long screenshots
      (and they don't run out of tiles)

Change-Id: Iff81293c6ec34bf3e024e930fe61ba9a1fd95b7b