ANDROID: fsnotify: Do not notify lower fs of open when ENOSYS

Even though FUSE supports d_canonical_path, the underlying server may
not implement the operation. In that case, follow the same logic for
filesystems that do not have the canonical path operation instead of
returning early from fsnotify_file with an error.

Bug: 326995824
Test: cts-tradefed run commandAndExit cts -m CtsOsTestCases -t android.os.cts.FileObserverTest

Change-Id: Iae618d4159222b06467b9a0bbb67fb67885aa65e
Signed-off-by: Tiffany Yang <ynaffit@google.com>