[vfs2] Do not drop inotify waiters across S/R.
[vfs2] Do not drop inotify waiters across S/R.

The waits-for relationship between an epoll instance and an inotify fd should
be restored.

This fixes flaky inotify vfs2 tests.

PiperOrigin-RevId: 340531367

google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor,google/gvisor