Fix: Use correct byte size for GPU_DEPTH_COMPONENT24

Every depth component has a trailing byte for alignment.
So it should be 4 bytes, not 3 bytes.

source/blender/gpu/intern/gpu_texture_private.hh

@@ -470,7 +470,9 @@ inline size_t to_bytesize(eGPUTextureFormat format)
     case GPU_DEPTH_COMPONENT32F:
       return 32 / 8;
     case GPU_DEPTH_COMPONENT24:
-      return 24 / 8;
+      /* Depth component 24 uses 3 bytes to store the depth value, and reserved 1 byte for
+       * alignment. */
+      return (24 + 8) / 8;
     case GPU_DEPTH_COMPONENT16:
       return 16 / 8;
   }