[ITS] test_flash_strength increase patch area Bug: 361213049 Flag: TEST_ONLY Testing: Verified by partner (cherry picked from https://googleplex-android-review.googlesource.com/q/commit:56986e10adf55cb55669545818cd5a4906e0eef6) Merged-In: I3d94d45a8b5dd19b3c5997e82f34c69d55d1a125 Change-Id: I3d94d45a8b5dd19b3c5997e82f34c69d55d1a125