RichTextLabel: Last line adjacent to dropcap has incorrect word wrap

[Koyper]

Godot version

4.2beta3

System information

MacOS Ventura

Issue description

For RTL with a dropcap, the last line of the vertical stack of wrapped lines adjacent to the drop cap is truncated too early such that the word wrap is incorrect.

Screen.Recording.2023-10-27.at.2.03.08.PM.mov

Steps to reproduce

See MRP below.

Minimal reproduction project

RTL_dropcap_wordwrap_bug.zip