### Godot version

4.0 stable

### System information

Manjaro Linux using i3, Foward+

### Issue description

Whenever the tileset property of any tilemap node is like open in the editor like this:
![image](https://user-images.githubusercontent.com/13070158/223416376-be0d7bca-1af8-43ad-9f19-a22de0a5a3c6.png)

If I select any other node and then select the TileMap node again it will print this error:
![image](https://user-images.githubusercontent.com/13070158/223416512-abbf4d45-e6c8-4c5f-894a-9b5810bf0cc2.png)
` editor/editor_node.cpp:8152 - Condition "plugins_list.has(p_plugin)" is true.`

This seems to be actually true to any plugin or `EditorInspectorPlugin` that edits node. In my project I have a InspectorPlugin that adds some buttons in `_parse_begin` for a specific kind of node, and that node also has an exported custom resource, and whenever I select any of that Node and their resource is open for edit in the Inspector I get the same error.

### Steps to reproduce

- Create a TileMap node on any scene
- Create a new TileSet resource on the TileMap node
- click on the TileSet resource to edit it in place in the TileMap node
- Select any other node
- Select the TileMap node again.


### Minimal reproduction project

[plugin_error_resource_edit.zip](https://github.com/godotengine/godot/files/10909135/plugin_error_resource_edit.zip)

- Open main scene
- Select the TileMap node
- Click the tileset resource in the inspector
- Select the root node
- Select TileMap node again
Ref<TileSetSource> source = tile_set->get_source(source_cell.source_id);
		Ref<TileSetAtlasSource> atlas_source = source;
		if (atlas_source.is_valid()) {
			tile_data = atlas_source->get_tile_data(source_cell.get_atlas_coords(), source_cell.alternative_tile);
		}
		if (!tile_data) {
			return RBSet<Vector2i>();
		}
		source_pattern = tile_data->get_terrains_pattern();
	}
	
	Rect2i boundaries;
	if (source_cell.source_id == TileSet::INVALID_SOURCE) {
		boundaries = tile_map->get_used_rect();
	}
	RBSet<Vector2i> output;
	if (p_contiguous) {
		
		RBSet<Vector2i> already_checked;
		List<Vector2i> to_check;
		to_check.push_back(p_coords);
		while (!to_check.is_empty()) {
			Vector2i coords = to_check.back()->get();
			to_check.pop_back();
			if (!already_checked.has(coords)) {
				
				TileSet::TerrainsPattern candidate_pattern(*tile_set, selected_terrain_set);
				if (tile_map->get_cell_source_id(tile_map_layer, coords) != TileSet::INVALID_SOURCE) {
					TileData *tile_data = nullptr;
					Ref<TileSetSource> source = tile_set->get_source(tile_map->get_cell_source_id(tile_map_layer, coords));