Rollup merge of #136199 - purplesyringa:emscripten-tests, r=jieyouxu

Fix a couple Emscripten tests

This fixes a couple Emscripten tests where the correct fix is more or less obvious. A couple UI tests are still broken with this PR:

- `tests/ui/abi/numbers-arithmetic/return-float.rs` (#136197)
- `tests/ui/no_std/no-std-unwind-binary.rs` (haven't debugged yet)
- `tests/ui/test-attrs/test-passed.rs` (haven't debugged this either)

`````@rustbot````` label +T-compiler +O-emscripten

Author: matthiaskrgr