LibJS: Let the bytecode interpreter set the VM's last value

Author: https://github.com/gunnarbeutner
Commit: 319a60043b
Pull-request: https://github.com/SerenityOS/serenity/pull/7973

Userland/Libraries/LibJS/Bytecode/Interpreter.cpp

@@ -41,6 +41,8 @@ Value Interpreter::run(Executable const& executable)
 
     TemporaryChange restore_executable { m_current_executable, &executable };
 
+    vm().set_last_value(Badge<Interpreter> {}, {});
+
     CallFrame global_call_frame;
     if (vm().call_stack().is_empty()) {
         global_call_frame.this_value = &global_object();
@@ -102,6 +104,8 @@ Value Interpreter::run(Executable const& executable)
         }
     }
 
+    vm().set_last_value(Badge<Interpreter> {}, accumulator());
+
     m_register_windows.take_last();
 
     auto return_value = m_return_value.value_or(js_undefined());