Rollup merge of #131681 - Zalathar:fix-run-make-stamp, r=jieyouxu

Fix up-to-date checking for run-make tests

This special case in `output_base_dir` had the unfortunate side-effect of causing all run-make tests to share the same `stamp` file. So as soon as any one of them succeeded, all of the failed tests would be incorrectly considered up-to-date and would no longer run in subsequent test invocations.

Fixes #129971.

r? jieyouxu

Author: matthiaskrgr