LibJS: Set the function names for the resolve, reject, and executor

These should all have a name with an empty string. Not only does test262
verify this, but it also verifies that (for the executor) the name
property is defined after the length property.

Userland/Libraries/LibJS/Runtime/Promise.cpp

@@ -94,7 +94,7 @@ Promise::ResolvingFunctions Promise::create_resolving_functions()
         vm.enqueue_promise_job(*job);
         return js_undefined();
     });
-    resolve_function->define_direct_property(vm.names.name, js_string(vm, vm.names.resolve.as_string()), Attribute::Configurable);
+    resolve_function->define_direct_property(vm.names.name, js_string(vm, String::empty()), Attribute::Configurable);
 
     // 27.2.1.3.1 Promise Reject Functions, https://tc39.es/ecma262/#sec-promise-reject-functions
     auto* reject_function = PromiseResolvingFunction::create(global_object(), *this, *already_resolved, [](auto& vm, auto&, auto& promise, auto& already_resolved) {
@@ -105,7 +105,7 @@ Promise::ResolvingFunctions Promise::create_resolving_functions()
         auto reason = vm.argument(0);
         return promise.reject(reason);
     });
-    reject_function->define_direct_property(vm.names.name, js_string(vm, vm.names.reject.as_string()), Attribute::Configurable);
+    reject_function->define_direct_property(vm.names.name, js_string(vm, String::empty()), Attribute::Configurable);
 
     return { *resolve_function, *reject_function };
 }

Userland/Libraries/LibJS/Runtime/PromiseReaction.cpp

@@ -43,6 +43,7 @@ PromiseCapability new_promise_capability(GlobalObject& global_object, Value cons
         return js_undefined();
     });
     executor->define_direct_property(vm.names.length, Value(2), Attribute::Configurable);
+    executor->define_direct_property(vm.names.name, js_string(vm, String::empty()), Attribute::Configurable);
 
     MarkedValueList arguments(vm.heap());
     arguments.append(executor);