Fix mypy error
This is not a runtime issue, because when the supplied mode is DentryPerms.symlink, the target is only used passed to os.symlink, which does allow str too.
Migrated from D8136 (view on Phabricator)
This is not a runtime issue, because when the supplied mode is DentryPerms.symlink, the target is only used passed to os.symlink, which does allow str too.
Migrated from D8136 (view on Phabricator)