chore: clear leftover sprite VRAM data on sprite change

src/2d_sprites.zig

@@ -730,6 +730,8 @@ fn initVertSpriteTuple() VertSpriteTuple {
 }
 
 fn loadSprite(comptime kind: usize, comptime i: usize, sprite: *OAM.Attribute) void {
+    GBA.memset32(GBA.SPRITE_VRAM, 0, 0x8000); // Clear Sprite VRAM
+
     sprites[kind][i].load();
     sprite.setSize(sprites[kind][i].size());
 }