Suppress InvalidPatternSyntax issue instead of demoting

So that it will still be an error for other parts of the code.

Flag: NONE
Bug: 311064136
Test: m RUN_ERROR_PRONE=true SystemUI-core SystemUI-tests SystemUIRobo-stub
Change-Id: I5191499460f7127b445df84ccdab4c2f9698d52e
2 files changed