[WASM] Implement lazy with UnsafeLazyImpl

compiler/testData/codegen/box/inference/builderInference/kt48445.kt

@@ -1,4 +1,3 @@
-// IGNORE_BACKEND: WASM
 // !LANGUAGE: +UnrestrictedBuilderInference
 // IGNORE_BACKEND_FIR: JVM_IR
 // FIR status: NEW_INFERENCE_NO_INFORMATION_FOR_PARAMETER on lazy call (Name3, T)

compiler/testData/codegen/box/inference/kt39824.kt

@@ -1,5 +1,3 @@
-// IGNORE_BACKEND: WASM
-// WASM_MUTE_REASON: STDLIB_LAZY
 // WITH_STDLIB
 
 fun <C : Any> diContext(context: C): DIContext<C> = DIContext(TypeToken(), context)