LibJS: Propagate the OOM error from setting the String length property

Author: https://github.com/trflynn89
Commit: 8414734a2d
Pull-request: https://github.com/SerenityOS/serenity/pull/17220
Reviewed-by: https://github.com/linusg ✅

Userland/Libraries/LibJS/Runtime/StringConstructor.cpp

@@ -63,7 +63,7 @@ ThrowCompletionOr<NonnullGCPtr<Object>> StringConstructor::construct(FunctionObj
     else
         primitive_string = TRY(vm.argument(0).to_primitive_string(vm));
     auto* prototype = TRY(get_prototype_from_constructor(vm, new_target, &Intrinsics::string_prototype));
-    return StringObject::create(realm, *primitive_string, *prototype);
+    return MUST_OR_THROW_OOM(StringObject::create(realm, *primitive_string, *prototype));
 }
 
 // 22.1.2.4 String.raw ( template, ...substitutions ), https://tc39.es/ecma262/#sec-string.raw