Localization POT generation does not regognize text on instanced nodes.

[Okxa]

Godot version

v4.0.stable.official [92bee43]

System information

Arch Linux

Issue description

Localization POT generation does not regognize text on instanced nodes.

Steps to reproduce

1. Create a 2D main scene
2. Create a scene with a button as the single node
3. Add the button scene as a instance to the main scene and edit the button instances text
4. Add a button node (not the instance) to the main scene and edit the buttons text
5. Go to Project Settings -> Localization -> POT generation, Add the main scene and generate POT file
6. observe the POT file and see there is no localization ID for the instanced buttons text

Minimal reproduction project

localization_instances.zip

[Okxa]

Issue might be that instanced button has no type when queried with SceneState.get_node_type()

The parser checks with the type if the node is translatable

godot/editor/plugins/packed_scene_translation_parser_plugin.cpp

Lines 54 to 58 in 1c1524a

	for (int i = 0; i < state->get_node_count(); i++) {
	String node_type = state->get_node_type(i);
	if (!ClassDB::is_parent_class(node_type, "Control") && !ClassDB::is_parent_class(node_type, "Window")) {
	continue;
	}

Tested if instances behave differently with the checks used in the parser (only in editor though):

func _ready():
    var state = ResourceLoader.load("res://main.tscn").get_state()
    var nodecount = state.get_node_count()
    for i in range(0, nodecount):
        var nodetype = state.get_node_type(i)
        print(state.get_node_name(i), ", type: ", nodetype, ", child of Control: ", ClassDB.is_parent_class(nodetype, "Control"), ", child of Window: ", ClassDB.is_parent_class(nodetype, "Window"))
        var propcount = state.get_node_property_count(i)
        for j in range(0, propcount):
            print(state.get_node_property_name(i, j), " ", state.get_node_property_value(i, j))

outputs:

...
Button, type: Button, child of Control: true, child of Window: false
offset_right 8
offset_bottom 8
text NORMAL_BTN
btn_instance, type: , child of Control: false, child of Window: false
offset_top 45
offset_bottom 188
text INSTANCED_BTN

[brunolucena]

I'm also facing this issue. Any updates on this?