[3.12] gh-131277: allow EnvironmentVarGuard to unset more than one environment variable at once (GH-131280)#131410

picnixz merged 2 commits intopython:3.12python/cpython:3.12from

picnixz:bp-312/3185e3115c918ec189e16cf9f5b51a13a0146556/unset-env-var-131277picnixz/cpython:bp-312/3185e3115c918ec189e16cf9f5b51a13a0146556/unset-env-var-131277Copy head branch name to clipboard