Tooltip from Editor Description field should propagate immediately

[ievr]

Godot version

4.1.2rc1

System information

Windows 10

Issue description

When the user updates the Editor Description field, the update does not reflect as a tooltip until the node is deselected.

While this might seem irrelevant, it impacts the discoverability of the feature.
My immediate assumption was that the field was to be displayed in a tooltip, but upon testing it didn't work until I changed scenes. This might make new users dismiss the feature.

Steps to reproduce

1. Open any project and click on a node
2. Find the Editor Description field in inspector and type something into it
3. Hover the node in the tree hierarchy with your mouse. Observe that it lacks a description
4. Deselect and select the node again to see the updated description in the tooltip

Minimal reproduction project

N/A

[Mickeon]

While I do agree, to achieve the update in real time would probably require updating the entire tree all over again, if not handled the most ideal away.

[jsjtxietian]

The tooltip is built per _add_nodes instead of everytime editor description field changes. There is a commit message 9f026d5 mentioned this behaviour. cc @Calinou

I think I might have an idea how to fix this.

[Calinou]

This was partially fixed by #66266, but you need to select another node for the tooltip to update.