Revert "Auto merge of #63649 - tlively:emscripten-upstream-upgrade, r=alexcrichton"

This reverts commit 7870050796, reversing
changes made to 2e7244807a.

src/test/ui/numbers-arithmetic/next-power-of-two-overflow-debug.rs

@@ -1,6 +1,6 @@
 // run-pass
 // compile-flags: -C debug_assertions=yes
-// ignore-emscripten compiled with panic=abort by default
+// ignore-wasm32-bare compiled with panic=abort by default
 // ignore-emscripten dies with an LLVM error
 
 use std::panic;