[clang] [llvm] [WebAssembly] support getVT from `externref` and `funcref` (PR #97080)

[Heejin Ahn via cfe-commits]

================
@@ -0,0 +1,18 @@
+// RUN: %clang_cc1 -O2 -triple wasm32-unknown-unknown-wasm -target-feature +reference-types -emit-llvm -o - %s | FileCheck %s
----------------
aheejin wrote:

```suggestion
// RUN: %clang_cc1 -O2 -triple wasm32-unknown-unknown -target-feature +reference-types -emit-llvm -o - %s | FileCheck %s
```

https://github.com/llvm/llvm-project/pull/97080