Fix autoadvance with delay = 0 (dialogic-godot#2192)

- should fix dialogic-godot#2190

addons/dialogic/Modules/Text/auto_advance.gd

@@ -91,10 +91,10 @@ func start() -> void:
 	var parsed_text: String = DialogicUtil.autoload().current_state_info['text_parsed']
 	var delay := _calculate_autoadvance_delay(parsed_text)
 
+	await DialogicUtil.autoload().get_tree().process_frame
 	if delay == 0:
 		_on_autoadvance_timer_timeout()
 	else:
-		await DialogicUtil.autoload().get_tree().process_frame
 		autoadvance_timer.start(delay)