Fix map image not showing in multiplayer

[Leroy231]

See screenshots below for issue. Ignore incorrect soldier locations on map in MP, there's a separate task for that.

SP:

MP:

[archimonde1111]

DevNote: Blocked by https://github.com/HaywireInteractive/OnAllFronts/pull/473 (PlayerController)

TODO:

• Remove marked node:

• Make sure the bug with LoadingWidget won't start happening again.
• Check if some of the spawned widgets (mainly the map widget) can be moved to HUD or somewhere else.