Don't use specific kilolitres codepoint glyph in WebAssembly

The font we use doesn't support that glyph, so work around it.

src/units.cpp

@@ -309,7 +309,15 @@ quantityInfo Units::getDisplayTextWithHysteresis(VenusOS::Enums::Units_Type unit
 		if (unit == VenusOS::Enums::Units_Volume_Liter) {
 			if (isOverLimit(scaleMatch, VenusOS::Enums::Units_Scale_Kilo, previousScale)) {
 				// \u2113 = l, \u3398 = kl
+#if defined(VENUS_WEBASSEMBLY_BUILD)
+				// The Roboto-Regular.ttf font used in WebAssembly builds doesn't provide a glyph for the \u3398 codepoint.
+				// We could pass the Global._quantityFontLoader font file to this method via getDisplayText()
+				// and then use QFontMetrics::inFont(QChar('\u3398')) to determine its existence programmatically,
+				// but then if there were per-language fallbacks this wouldn't work.  So, just hardcode a workaround.
+				quantity.unit = QStringLiteral("k\u2113");
+#else
 				quantity.unit = QStringLiteral("\u3398");
+#endif
 				quantity.scale = VenusOS::Enums::Units_Scale_Kilo;
 				scaledValue = scaledValue / 1000.0;
 			}