mingw_rename: support ReFS on Windows 2022 (git-for-windows#5515)

Git on Windows 2022 fails to write config files on ReFS with the error
message "Function not implemented". The reason is that
`ERROR_NOT_SUPPORTED` is reported (not `ERROR_INVALID_PARAMETER`, as
expected). Let's handle both errors the same: by falling back to the
best-effort option, namely to rename without POSIX semantics.

This fixes git-for-windows#5427

Author: dscho

compat/mingw.c

@@ -2891,7 +2891,7 @@ int mingw_rename(const char *pold, const char *pnew)
 		 * current system doesn't support FileRenameInfoEx. Keep us
 		 * from using it in future calls and retry.
 		 */
-		if (gle == ERROR_INVALID_PARAMETER) {
+		if (gle == ERROR_INVALID_PARAMETER || gle == ERROR_NOT_SUPPORTED) {
 			supports_file_rename_info_ex = 0;
 			goto repeat;
 		}