Given the discussion / general agreement about the issue on https://github.com/web-platform-tests/wpt/pull/55022#issuecomment-3499478504 , I don't think a test-change-proposal is necessary here. But it's probably worth posting an FYI on the thread that you linked in comment 0 as a heads-up that this test-fix is incoming, to close the loop there & as a heads-up for anyone else who might've had "fix this test" on their to-do list coming out of that thread.
Bug 2009222 Comment 2 Edit History
Note: The actual edited comment in the bug view page will always show the original commenter’s name and original timestamp.
Given the discussion / general agreement about the issue on https://github.com/web-platform-tests/wpt/pull/55022#issuecomment-3499478504 , I don't think a test-change-proposal is necessary here. But it's probably worth posting an FYI on that thread as a heads-up that this test-fix is incoming, to close the loop there & as a heads-up for anyone else who might've had "fix this test" on their to-do list coming out of that thread.