The "Lookup Symbol" button don't appears for custom class names.

[Vilcrow]

Godot version

4.0 dev_build

System information

Ubuntu 22.04.1

Issue description

The "Lookup Symbol" button don't appears for custorm class names.
Related issues: #68475, #73167.
I tried apply #68311, #69473 and #73196. It don't helps.
The Ctrl+LMB works right for all cases.

Steps to reproduce

Right click to the CustomClassA symbol in the custom_class_b.gd anywhere. The Lookup Symbol button don't appears in the context menu.

Minimal reproduction project

Example from #68475.