[OoT] Fix rendering when roomless objects are mixed with room-bound objects

[Dragorn421]

How to reproduce the bug in main:

1. switch to OoT gamemode in fast64
2. create a scene (click "Add scene" button), this adds a mesh parented to a room
3. create a mesh without parenting it to any room
4. observe that nothing is rendered anymore and the following error is in stdout:

Traceback (most recent call last):
  File "/home/dragorn421/.config/blender/4.2/scripts/addons/f64render_gitlinked/renderer.py", line 314, in draw_scene
    draw_oot_scene(self, depsgraph, hidden_objs, space_view_3d, projection_matrix, view_matrix, always_set)
  File "/home/dragorn421/.config/blender/4.2/scripts/addons/f64render_gitlinked/oot.py", line 128, in draw_oot_scene
    for room, obj_queue in sorted(room_queue.items(), key=lambda item: item[0].name):  # sort by layer
                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
TypeError: '<' not supported between instances of 'str' and 'NoneType'

[Reonu]

My OoT project has this issue. I tried the PR and I can confirm it fixes it!