Certain mouse interactions cause Godot to crash in All Actions Menu

[Naros]

Describe the bug

In the all actions menu perform the following steps:

1. Search for Self
2. Click on Variables to collapse & expand the tree
3. Click anywhere in the area of the tree widget below Get self
4. Editor crashes

The issue is that the dialog raises a nothing_selected signal in this case and the code is designed to operate on the selected item. However, Godot returns a TreeItem from Tree::get_selected despite the Variables item being non-selectable, and so this is what caused the segfault with the code path.

Possible fixes include:

1. Remove the nothing_selected signal handler
2. Guard the item_activated callback to check that the first column is selectable before dispatch

Expected behavior

No response

Actual behavior

No response

How to Reproduce?

No response

Godot full version

4.2, 4.3

Orchestrator version

2.1, 2.0

Additional information

No response