Prevent crash when texture format is unrecognized

Author: xCollateral

src/main/java/net/vulkanmod/render/engine/VkGpuTexture.java

@@ -134,7 +134,7 @@ public static TextureFormat textureFormat(int format) {
             case VK10.VK_FORMAT_R8G8B8A8_UNORM, VK10.VK_FORMAT_B8G8R8A8_UNORM -> TextureFormat.RGBA8;
             case VK10.VK_FORMAT_R8_UNORM -> TextureFormat.RED8;
             case VK10.VK_FORMAT_D32_SFLOAT -> TextureFormat.DEPTH32;
-            default -> throw new IllegalStateException("Unexpected value: " + format);
+            default -> null;
         };
     }