[Regression] Selected text foreground color not working

Steps to reproduce

• Install gtk-4.15.5
• Start a gtk4 text editor that supports syntax highlighting (tested gnome-text-editor with the "Adwaita" stylescheme)
• Select some text

Current behavior

Foreground color lost, all selected text is black.

Expected outcome

Foreground color unchanged.

Additional information

Regression introduced by !7558 (merged) , more specifically ed119ae2.

Before (51768d0e)	After (ed119ae2)