[rush] Delete stale build-cache-restore staging folders left by interrupted restores - #6213

[rush] Delete stale build-cache-restore staging folders left by interrupted restores#6213

Heramb_Inamke (HerambInamke) wants to merge 1 commit into

microsoft:mainmicrosoft/rushstack:mainfrom

HerambInamke:fix/issue-6145-stale-build-cache-restore-foldersHerambInamke/rushstack:fix/issue-6145-stale-build-cache-restore-foldersCopy head branch name to clipboard