fix(auth): handle null APPDATA environment variable in GoogleAuthUtils.getWellKnownCredentialsFile#12913

Open

anishesg wants to merge 2 commits intogoogleapis:mainfrom

anishesg:fix/ph-issue-12565

Commits on Apr 24, 2026

fix(auth): handle null APPDATA environment variable in GoogleAuthUtils.getWellKnownCredentialsFile
anishesg
committed
address review feedback: extend APPDATA check to reject empty/blank strings, add tests
anishesg
committed