Fix _xcode_config attribute for bazel 9.x (#4491)

This label was removed @ HEAD
https://github.com/bazelbuild/bazel/commit/873b036afbf77ede4588aeaa95b119fb486accef#diff-063fdd9649746cd022e13edf6ac43956dfd4e55c5420847d00162557e7697d93L68

This is how it is accessed in rules_apple / apple_support
1 file changed