[release-22.0] filebackupstorage: use fileutil.SafePathJoin for all path building (#19479)#19480

timvaillancourt merged 1 commit into

release-22.0vitessio/vitess:release-22.0from

backport-19479-to-release-22.0vitessio/vitess:backport-19479-to-release-22.0Copy head branch name to clipboard