Text editor theme not updated on editor theme change from dark to light theme

[lalitshankarchowdhury]

Tested versions

Reproducible in master

System information

Ubuntu 24.04 - Godot 4.3 Dev (master)

Issue description

When switching from a dark theme (like Solarized (Dark)) to a light one (Solarized (light)), the script editor theme is not updated to match the editor theme.

It only updates when Godot is restarted.

Steps to reproduce

• Select dark theme (Solarized(Dark))
• Select light theme (any)
• Theme changes but the script editor theme does not change
• Restart editor
• Theme is correct but reverting to the older theme does not update the script editor theme

Minimal reproduction project (MRP)

N/A

[Chaosus]

Can confirm that it's a bug at master (04692d83cb8f61002f18ea1d954df8c558ee84f7), it was not on 4.3 so it's a regression.

Example (from Solarized Light to Solarized Dark):

[alavacek]

I am interested in taking on this feature request, how would I go about doing so?