RichTextLabel has no property for line_spacing, just line_separation

[AdamLearns]

Tested versions

• Reproducible in v4.4.beta1.mono.official [d33da79d3]

System information

macOS Sonoma 14.6.1

Issue description

RichTextLabel has no line_spacing property, which would set the space only between lines. Instead, it has line_separation, which adds that amount of space after each line. E.g. in this picture, there is a lot of blank space below "Line 3":

The best workaround I could find is making a FontVariation that has spacing_bottom set to a negative value while keeping line_separation at a positive value. I believe this is similar to specifying the BBCode [font bt=5] but in such a way that you don't need to modify every RichTextLabel in your game.

Steps to reproduce

• Make a RichTextLabel
• Increase its line_separation property to make it more obvious

Minimal reproduction project (MRP)

richtextlabelspacingrepro.zip