Auto merge of #129115 - jieyouxu:reenable-dump-ice, r=estebank

Re-enable `dump-ice-to-disk` for Windows

This test was previously flakey on `i686-mingw` (reason unknown), but since some modifications (quarantining each ICE test in separate tmp dirs, adding/removing `RUSTC_ICE` env vars as suitable to prevent any kind of environmental influence), I could no longer make it fail on `i686-mingw`.

I tried running this test (without the `ignore-windows` of course) a bunch of times via `i686-mingw` try jobs and it refused to fail (see #128958). I was also never able to reproduce the failure locally.

In any case, if this turns out to be still flakey on `i686-mingw`, we can revert the removal of `ignore-windows` but this time we'll have way more context for why the test failed.

Running the `i686-mingw` alongside some Windows jobs for basic santiy check. But the try jobs succeeding is insufficient to guarantee reproducibility.

cc #129115 for backlink.

try-job: x86_64-msvc
try-job: x86_64-mingw
try-job: i686-msvc
try-job: i686-mingw