context menu items not being added

ERROR: res://addons/mod_loader/resources/mod_manifest.gd:116 - Invalid access to property or key 'ml_options' on a base object of type 'Node (mod_loader_store.gd)'.
ModTool: Loaded manifest from res://mods-unpacked/rssaromeo-test/manifest.json
WARNING: editor/editor_file_system.cpp:1376 - UID duplicate detected between res://mods-unpacked/rssaromeo-test/mod_main.gd and res://addons/mod_tool/templates/default/mod_main.gd.
ERROR: core/object/object.cpp:1300 - Error calling from signal 'about_to_popup' to callable: 'Control(file_system_context_actions.gd)::_on_file_list_context_actions_about_to_popup': Cannot convert argument 2 from Object to Object.

at
```gdscript
func _on_file_list_context_actions_about_to_popup(context_menu: PopupMenu, list: ItemList) -> void:
if not list.get_selected_items().size() > 0: # Empty space was clicked
return

var file_paths := []
for item_index in list.get_selected_items():
var file_path = list.get_item_metadata(item_index)
if file_path is String:
file_paths.append(file_path)

add_custom_context_actions(context_menu, file_paths)
```
list should be a Tree not an ItemList as that is what is passed in to this function.

godot version v4.5.beta1.official [46c495ca2]

Read file_system_context_actions.gd and the _on_file_list_context_actions_about_to_popup function, then reproduce the issue on Godot v4.5.beta1. Update the list handling to match the Tree passed by the signal; done means the context menu items are added without the signal argument conversion error.

Written by the indexing model from the issue text.