Fix: EEVEE-Next: Mesh see-through in edit mode with orthographic

The stored depth buffer was not considering orthographic
viewport cameras that have negative Z depth values.

Fix #123146

source/blender/draw/engines/eevee_next/shaders/eevee_film_lib.glsl

@@ -20,7 +20,7 @@ float film_depth_convert_to_scene(float depth)
     /* TODO */
     return 1.0;
   }
-  return abs(drw_depth_screen_to_view(depth));
+  return -drw_depth_screen_to_view(depth);
 }
 
 /* Load a texture sample in a specific format. Combined pass needs to use this. */