Fix connecting a signal with a double click is too difficult

Co-authored-by: Danil Alexeev <dalexeev12@yandex.ru>

core/input/input.cpp

@@ -308,6 +308,26 @@ bool Input::is_anything_pressed() const {
 	return false;
 }
 
+bool Input::is_anything_pressed_except_mouse() const {
+	_THREAD_SAFE_METHOD_
+
+	if (disable_input) {
+		return false;
+	}
+
+	if (!keys_pressed.is_empty() || !joy_buttons_pressed.is_empty()) {
+		return true;
+	}
+
+	for (const KeyValue<StringName, Input::ActionState> &E : action_states) {
+		if (E.value.cache.pressed) {
+			return true;
+		}
+	}
+
+	return false;
+}
+
 bool Input::is_key_pressed(Key p_keycode) const {
 	_THREAD_SAFE_METHOD_