[Wasm] Better preserve IR types after inlining

compiler/testData/codegen/box/inlineClasses/kt44867.kt

@@ -1,9 +1,5 @@
 // WITH_STDLIB
 // IGNORE_BACKEND: JVM
-// IGNORE_BACKEND: WASM
-// WASM_MUTE_REASON: FAKE_OVERRIDE_ISSUES
-// On wasm this will produce conflicting return types, Result.<get-value> will return Any but we will try to interpret it as String.
-// Before wasm native strings this worked by chance because we added unbox intrinsic for strings.
 
 open class BaseWrapper<T>(val response: T)
 class Wrapper(result: Result<String>) : BaseWrapper<Result<String>>(result)