Shadowed Chat and Player List Text
This implements the (existing but unimplemented) plDynamicTextMap::kFontShadowed flag, making the text of the mini KI (player list and chat) better readable on light and patterned backgrounds.
For best results, an additional Python change is recommended: MOULSCRIPT-ou PR #23.
From H-uru/Plasma#392.
Previous revision didn't work, many controls retained their shadows because they never got the new flags from the color scheme and put them into the dynamic text map. I haven't checked if any more of the many control classes are affected, but those that we need in the KI right now are covered.
This fixes the irregular dark fringes around light text when not exactly pixel-aligned that are caused by independent interpolation of color and alpha. It also makes calculations simpler for things to come.
In addition to being a prerequisite for shadowed text, this also fixes an issue sometimes seen at the bottom of the mini KI player list where characters with a descender were missing.
