Script name tooltips are oversized

[KoBeWi]

Godot version

4.1 db5113d

System information

Windows 10.0.19045 - Vulkan (Forward+) - dedicated NVIDIA GeForce GTX 1060 (NVIDIA; 30.0.15.1403) - Intel(R) Core(TM) i7-7700HQ CPU @ 2.80GHz (8 Threads)

Issue description

Notice the empty space to the right. I actually have a worse case in my project, but I couldn't reproduce it outside:

Regression from #77651
CC @Rindbee

Steps to reproduce

1. Add a new script
2. Name it ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;.gd
3. Hover its name in the Script Editor

Minimal reproduction project

N/A

[Rindbee]

The first call to _update_minimum_size() usually happens when the control is first visible in the tree. This might be a bit late for Label. The (minimum) size cache needs to be recalculated after the text is modified and the theme is changed.

godot/scene/main/viewport.cpp

Line 1489 in 17bfccc

Rect2 r(gui.tooltip_pos + tooltip_offset, gui.tooltip_popup->get_contents_minimum_size());

godot/scene/main/viewport.cpp

Line 1523 in 17bfccc

gui.tooltip_popup->set_size(r.size);

And the calculation needs to be done before set_size() is called.