TextBubble layout: Changing Choice Size messes up layout; so do long choices

[Jowan-Spooner]

This was discovered by user Kooky on discord:

Godot 4.1.1, dv2-alpha-8

Original image:

Bubble max_width is reduced to 150, with custom font AND custom font size

Here it is with default font and font size

With default font but reduced font size

Only reduced size for text, not for choices

Other stuff

Box-modulate doesn't apply alpha to box, only to tail.