Update owners file from include to file

include honours set noparent while file does not

https://screenshot.googleplex.com/3UpW43yXjB9fqez

Bug: 341014089
Change-Id: I60678063fbf94542218d5adca80bcf72a700563f
Test: N/A

tests/FlickerTests/IME/OWNERS

 # ime
 # Bug component: 34867
-include /services/core/java/com/android/server/inputmethod/OWNERS
+file:/services/core/java/com/android/server/inputmethod/OWNERS