LibJS: Remove the name prefix for wrapped functions

This is a normative change in the ShadowRealm spec.

See: https://github.com/tc39/proposal-shadowrealm/commit/4ca634a

Userland/Libraries/LibJS/Runtime/ShadowRealm.cpp

@@ -32,8 +32,8 @@ void ShadowRealm::visit_edges(Visitor& visitor)
     visitor.visit(&m_shadow_realm);
 }
 
-// 3.1.2 CopyNameAndLength ( F: a function object, Target: a function object, prefix: a String, optional argCount: a Number, ), https://tc39.es/proposal-shadowrealm/#sec-copynameandlength
-ThrowCompletionOr<void> copy_name_and_length(GlobalObject& global_object, FunctionObject& function, FunctionObject& target, StringView prefix, Optional<unsigned> arg_count)
+// 3.1.2 CopyNameAndLength ( F: a function object, Target: a function object, optional prefix: a String, optional argCount: a Number, ), https://tc39.es/proposal-shadowrealm/#sec-copynameandlength
+ThrowCompletionOr<void> copy_name_and_length(GlobalObject& global_object, FunctionObject& function, FunctionObject& target, Optional<StringView> prefix, Optional<unsigned> arg_count)
 {
     auto& vm = global_object.vm();
 
@@ -87,7 +87,7 @@ ThrowCompletionOr<void> copy_name_and_length(GlobalObject& global_object, Functi
         target_name = js_string(vm, String::empty());
 
     // 8. Perform ! SetFunctionName(F, targetName, prefix).
-    function.set_function_name({ target_name.as_string().string() }, prefix);
+    function.set_function_name({ target_name.as_string().string() }, move(prefix));
 
     return {};
 }

Userland/Libraries/LibJS/Runtime/ShadowRealm.h

@@ -33,7 +33,7 @@ private:
     ExecutionContext m_execution_context; // [[ExecutionContext]]
 };
 
-ThrowCompletionOr<void> copy_name_and_length(GlobalObject&, FunctionObject& function, FunctionObject& target, StringView prefix, Optional<unsigned> arg_count = {});
+ThrowCompletionOr<void> copy_name_and_length(GlobalObject&, FunctionObject& function, FunctionObject& target, Optional<StringView> prefix = {}, Optional<unsigned> arg_count = {});
 ThrowCompletionOr<Value> perform_shadow_realm_eval(GlobalObject&, StringView source_text, Realm& caller_realm, Realm& eval_realm);
 ThrowCompletionOr<Value> shadow_realm_import_value(GlobalObject&, String specifier_string, String export_name_string, Realm& caller_realm, Realm& eval_realm, ExecutionContext& eval_context);
 ThrowCompletionOr<Value> get_wrapped_value(GlobalObject&, Realm& caller_realm, Value);

Userland/Libraries/LibJS/Runtime/WrappedFunction.cpp

@@ -24,8 +24,8 @@ ThrowCompletionOr<WrappedFunction*> WrappedFunction::create(GlobalObject& global
     auto& prototype = *caller_realm.global_object().function_prototype();
     auto* wrapped = global_object.heap().allocate<WrappedFunction>(global_object, caller_realm, target, prototype);
 
-    // 7. Let result be CopyNameAndLength(wrapped, Target, "wrapped").
-    auto result = copy_name_and_length(global_object, *wrapped, target, "wrapped"sv);
+    // 7. Let result be CopyNameAndLength(wrapped, Target).
+    auto result = copy_name_and_length(global_object, *wrapped, target);
 
     // 8. If result is an Abrupt Completion, throw a TypeError exception.
     if (result.is_throw_completion())

Userland/Libraries/LibJS/Tests/builtins/ShadowRealm/ShadowRealm.prototype.evaluate.js

@@ -46,8 +46,8 @@ describe("normal behavior", () => {
         expect(typeof wrappedFunction).toBe("function");
         expect(Object.getPrototypeOf(wrappedFunction)).toBe(Function.prototype);
 
-        expect(shadowRealm.evaluate("(function () {})").name).toBe("wrapped ");
-        expect(shadowRealm.evaluate("(function foo() {})").name).toBe("wrapped foo");
+        expect(shadowRealm.evaluate("(function () {})").name).toBe("");
+        expect(shadowRealm.evaluate("(function foo() {})").name).toBe("foo");
         expect(shadowRealm.evaluate("(function () {})")).toHaveLength(0);
         expect(shadowRealm.evaluate("(function (foo, bar) {})")).toHaveLength(2);
         expect(