Update dialogue_base_node.gd

Verify if the name node exists before trying to use it

Author: AnidemDex

addons/textalog/nodes/dialogue_base_node/dialogue_base_node.gd

@@ -67,7 +67,8 @@ func _fake_ready() -> void:
 	_connect_portrait_manager_signals()
 	_connect_options_manager_signals()
 
-	name_node.add_stylebox_override("normal", get_stylebox("name", "DialogNode"))
+	if is_instance_valid(name_node):
+		name_node.add_stylebox_override("normal", get_stylebox("name", "DialogNode"))
 
 	if not Engine.editor_hint:
 		hide()