Fix FileOberverTest for kernel 6.6

kernel 6.6 changed inotify behavior by combining notifications under
some situation

Test: atest FileObserverTest
Bug: 323896645
(cherry picked from https://googleplex-android-review.googlesource.com/q/commit:f149e37f185130ab06bc74f70195e1b7b5d2e297)
Merged-In: I2203f2f485623e330ed9009d07a99c8daefa2797
Change-Id: I2203f2f485623e330ed9009d07a99c8daefa2797
1 file changed