Text Editor won't update syntax highligthing when Text Editor theme changes

[ghost]

Tested versions

Reproducible in v4.4.dev3.official [f4af820]

System information

Godot v4.4.dev3 - Fedora Linux 40.20241020.0 (Silverblue) on Wayland - X11 display driver, Single-window, 1 monitor - Vulkan (Forward+) - dedicated AMD Radeon RX 570 Series (RADV POLARIS10) - Intel(R) Core(TM) i3-10100F CPU @ 3.60GHz (8 threads)

Issue description

Issue seems to have similar cause as my older issues, like #89534.
When changing Text Editor theme, syntax highlighting won't update until I will type something (for example, spacebar).

2024-10-20.21-10-05.webm

Steps to reproduce

1. Open script.
2. Open Editor settings.
3. Change text_editor/theme/color_theme to any theme.
4. Close settings window.
5. Observe that syntax highlighting still uses colors from previous theme.
6. Input anything in script (for example, spacebar).
7. Syntax highlighting will be updated for correct colors.

Minimal reproduction project (MRP)

Any project with opened script in Text Editor.
text_editor_highlighting_wont_update.zip