[wasm] Fix compilation on gcc

This CL fixed the following compilation error:
```
error: inline declaration of 'Union(...)' follows declaration with attribute 'noinline'
```

Change-Id: I9672ca89d245e5f018f7dada57e30be1fc170115
Reviewed-on: https://chromium-review.googlesource.com/c/v8/v8/+/3673194Reviewed-by: Manos Koukoutos <manoskouk@chromium.org>
Commit-Queue: Milad Farazmand <mfarazma@redhat.com>
Cr-Commit-Position: refs/heads/main@{#80822}

src/wasm/wasm-subtyping.cc

@@ -383,10 +383,9 @@ HeapType::Representation CommonAncestorWithGeneric(HeapType heap1,
 }
 }  // namespace
 
-V8_NOINLINE V8_EXPORT_PRIVATE TypeInModule Union(ValueType type1,
-                                                 ValueType type2,
-                                                 const WasmModule* module1,
-                                                 const WasmModule* module2) {
+V8_EXPORT_PRIVATE TypeInModule Union(ValueType type1, ValueType type2,
+                                     const WasmModule* module1,
+                                     const WasmModule* module2) {
   if (!type1.is_object_reference() || !type2.is_object_reference()) {
     return {
         EquivalentTypes(type1, type2, module1, module2) ? type1 : kWasmBottom,

src/wasm/wasm-subtyping.h

@@ -126,19 +126,18 @@ inline std::ostream& operator<<(std::ostream& oss, TypeInModule type) {
              << reinterpret_cast<intptr_t>(type.module);
 }
 
-V8_NOINLINE V8_EXPORT_PRIVATE TypeInModule Union(ValueType type1,
-                                                 ValueType type2,
-                                                 const WasmModule* module1,
-                                                 const WasmModule* module2);
+V8_EXPORT_PRIVATE TypeInModule Union(ValueType type1, ValueType type2,
+                                     const WasmModule* module1,
+                                     const WasmModule* module2);
 
 V8_INLINE V8_EXPORT_PRIVATE TypeInModule Union(TypeInModule type1,
                                                TypeInModule type2) {
   return Union(type1.type, type2.type, type1.module, type2.module);
 }
 
-V8_NOINLINE V8_EXPORT_PRIVATE TypeInModule
-Intersection(ValueType type1, ValueType type2, const WasmModule* module1,
-             const WasmModule* module2);
+V8_EXPORT_PRIVATE TypeInModule Intersection(ValueType type1, ValueType type2,
+                                            const WasmModule* module1,
+                                            const WasmModule* module2);
 
 V8_INLINE V8_EXPORT_PRIVATE TypeInModule Intersection(TypeInModule type1,
                                                       TypeInModule type2) {