Changing the space size in FontVariation does not change the size of the tabs

[sydist]

Tested versions

• Reproducible in 4.4.1.stable.

System information

Godot v4.4.1.stable - Windows 10 (build 19044) - Multi-window, 1 monitor - Vulkan (Mobile) - dedicated NVIDIA GeForce GTX 1660 Ti (NVIDIA; 31.0.15.4584) - Intel(R) Core(TM) i7-10750H CPU @ 2.60GHz (12 threads)

Issue description

Changing the space size in FontVariation does not change the size of the tabs, even though the size of tabs should be dependant on the size of the space character.

Steps to reproduce

Open the attached MRP and change the size of the space character in the RichTextLabel's FontVariation, and observe that the size of tabs doesn't actually change.

Minimal reproduction project (MRP)

tabspaces.zip