Ignore wasm32 in test.

Author: cjgillot

src/test/mir-opt/inline/issue-78442.rs

@@ -1,5 +1,5 @@
 // compile-flags: -Z mir-opt-level=3 -Z inline-mir
-
+// ignore-wasm32-bare compiled with panic=abort by default
 #![crate_type = "lib"]
 
 // EMIT_MIR issue_78442.bar.RevealAll.diff