test_perf_profiler: race condition when cleaning up perf-*.map files

Bug report

Bug description:

What happens

Lib/test/test_perf_profiler.py uses setUp/tearDown to record all perf-*.map files in /tmp at test start, then deletes any new ones at the end.

When tests run in parallel (make -j, CI runners, pytest-xdist), one test deletes map files belonging to another test → race condition.

This causes:

• Flaky test failures
• Leftover /tmp/perf-*.map files
• Unreliable CI results

What should happen

Each test should only delete the perf-*.map file(s) it created, regardless of other concurrent processes.

CPython versions tested on:

CPython main branch

Operating systems tested on:

No response

Linked PRs

• gh-141593

从 Lib/test/test_perf_profiler.py 开始，重点关注其 setUp 和 tearDown 对 /tmp 中 perf-*.map 文件的处理。如果支持并行执行，请以并行方式运行测试，并检查文件的创建和清理方式。完成的标准是每个测试只删除它创建的 map 文件，而不会删除属于并发测试的文件。