Grind main/menu_compa: CompaDraw signed->unsigned char alpha cast (clrlwi byte-mask)

Line 295 SetColor passed the alpha as static_cast<signed char>, but the
target emits a clrlwi r7,r0,24 (unsigned-byte zero-extend) before the
CColor(Uc,Uc,Uc,Uc) constructor call (Ghidra 80160edc row ~571,
__ct__6CColorFUcUcUcUc 4th arg). The sibling SetColor at line 341 already
uses static_cast<unsigned char>; making line 295 consistent matches the
byte-mask the original emitted.

CompaDraw misalign 23 -> 21; unit fuzzy 95.749 -> 95.864.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Author: zcanann

src/menu_compa.cpp

@@ -292,7 +292,7 @@ void CMenuPcs::CompaDraw()
 	font->SetScaleY(kCompaOne);
 	font->DrawInit();
 
-	font->SetColor(CColor(0xFF, 0xFF, 0xFF, static_cast<signed char>(kCompaColorMax * compaList->entries[0].alpha)).color);
+	font->SetColor(CColor(0xFF, 0xFF, 0xFF, static_cast<unsigned char>(kCompaColorMax * compaList->entries[0].alpha)).color);
 
 	const CCaravanWork* nameWork = reinterpret_cast<const CCaravanWork*>(Game.m_scriptFoodBase[0]);
 	drawIndex = 0;