### Godot version

v4.1.dev.custom_build [a8453cb33]

### System information

Windows 11, Core i5-12400F, RX 6600

### Issue description

in recent custom 4.1 builds it is regening every ext id on every save even if just one simple file

	[gd_scene load_steps=2 format=3 uid="uid://bj3w1run711x7"]

	[ext_resource type="Texture2D" uid="uid://c082xolc76p8n" path="res://icon.svg" id="1_ftki2"]

	[node name="Node2D" type="Node2D"]

	[node name="Sprite2D" type="Sprite2D" parent="."]
	position = Vector2(351, 294)
	texture = ExtResource("1_ftki2")

can use a script like this save all files and regen all ext ids in project

	@tool
	extends EditorScript

	func listFiles(path: String, extensions: Array = []) -> Array:
		var list := []
		for dir in DirAccess.get_directories_at(path):
			if not dir.begins_with("."):
				list.append_array(listFiles(path + dir + "/", extensions))
		for file in DirAccess.get_files_at(path):
			var ext := file.split(".")[-1]
			if not file.begins_with(".") and ext != "import":
				if extensions.is_empty() or ext in extensions:
					list.append(path + file)
		return list

	func _run() -> void:
		for file in listFiles("res://", ["tscn", "tres"]):
			ResourceSaver.save(load(file))

in 4.0.2 this script does not regen every ext id in the project each time it is run (just when needed) but in latest 4.1 it does
but just ctrl+s works'nt too

thanks

thought it was related to this but maybe not
https://github.com/godotengine/godot/issues/76693

### Steps to reproduce

- make new scene with ext resource (new control, new sprite, set texture to icon)
1 - save, stage changes
2 - goto 1

or can use script on any project to see that it applies to everything, everywhere, all at once


### Minimal reproduction project

n/a
wf2->store_32(prop_count);
			wf2->seek_end();
		}
	}
	uint64_t offset_from = wf->get_position();
	wf->seek(sub_res_count_pos); 
	wf->store_32(local_offsets.size());
	for (int i = 0; i < local_offsets.size(); i++) {
		wf->seek(local_pointers_pos[i]);
		wf->store_64(local_offsets[i] + offset_from);
	}
	wf->seek_end();
	Vector<uint8_t> data = FileAccess::get_file_as_bytes(temp_file);
	wf->store_buffer(data.ptr(), data.size());
	{
		Ref<DirAccess> dar = DirAccess::open(temp_file.get_base_dir());
		dar->remove(temp_file);
	}
	wf->store_buffer((const uint8_t *)"RSRC", 4); 
	return OK;
}
Error ResourceLoaderText::get_classes_used(HashSet<StringName> *r_classes) {
	if (error) {
		return error;
	}
	ignore_resource_parsing = true;
	DummyReadData dummy_read;
	dummy_read.no_placeholders = true;
	VariantParser::ResourceParser rp_new;
	rp_new.ext_func = _parse_ext_resource_dummys;