Revert "Roll Clang Mac from HpW96jrB8... to JziYOnXHQ... (#29466)" (#29492)
Revert "Roll Clang Mac from HpW96jrB8... to JziYOnXHQ... (#29466)" (#29492)

This reverts commit c674d2cbc6e053599699db3f1d0127a13212fe7e.
chinmaygarde/flutter_engine,aam/engine,devoncarew/engine,rmacnak-google/engine,flutter/engine,devoncarew/engine,aam/engine,jason-simmons/flutter_engine,jason-simmons/flutter_engine,chinmaygarde/flutter_engine,chinmaygarde/flutter_engine,rmacnak-google/engine,devoncarew/engine,aam/engine,jason-simmons/flutter_engine,aam/engine,devoncarew/engine,jason-simmons/flutter_engine,rmacnak-google/engine,flutter/engine,jason-simmons/flutter_engine,devoncarew/engine,aam/engine,flutter/engine,chinmaygarde/flutter_engine,jason-simmons/flutter_engine,devoncarew/engine,chinmaygarde/flutter_engine,devoncarew/engine,rmacnak-google/engine,flutter/engine,chinmaygarde/flutter_engine,aam/engine,flutter/engine,flutter/engine,aam/engine,jason-simmons/flutter_engine,rmacnak-google/engine,flutter/engine,jason-simmons/flutter_engine,aam/engine,rmacnak-google/engine,rmacnak-google/engine,flutter/engine,chinmaygarde/flutter_engine