GamesSettings+LibCards: Make 'Red' the default card back

The red back is a more suitable default as it's a traditional vanilla
design and red is one of Serenity's brand colors.

Userland/Applications/GamesSettings/CardSettingsWidget.cpp

@@ -18,7 +18,7 @@
 
 namespace GamesSettings {
 
-static constexpr StringView default_card_back_image_path = "/res/graphics/cards/backs/buggie-deck.png"sv;
+static constexpr StringView default_card_back_image_path = "/res/graphics/cards/backs/Red.png"sv;
 static constexpr StringView default_card_front_image_set = "Classic"sv;
 
 class CardGamePreview final : public Cards::CardGame {

Userland/Libraries/LibCards/CardPainter.cpp

@@ -23,7 +23,7 @@ CardPainter& CardPainter::the()
 
 CardPainter::CardPainter()
 {
-    m_back_image_path = MUST(String::from_deprecated_string(Config::read_string("Games"sv, "Cards"sv, "CardBackImage"sv, "/res/graphics/cards/backs/buggie-deck.png"sv)));
+    m_back_image_path = MUST(String::from_deprecated_string(Config::read_string("Games"sv, "Cards"sv, "CardBackImage"sv, "/res/graphics/cards/backs/Red.png"sv)));
     set_front_images_set_name(MUST(String::from_deprecated_string(Config::read_string("Games"sv, "Cards"sv, "CardFrontImages"sv, "Classic"sv))));
 }