2.6: Trying to open a save game on a map that you don't have downloaded fails without error message

[asvitkine]

Reproduction Steps

1. Open a save game for a map that doesn't exist.
2. Start the game.

Expected: A dialog box saying the map doesn't exist, would you like to download it? (like in 2.5)
Actual: Game fails silently during load and reverts to game lobby screen.

Attach a Save Game

I tried it with this 2.5 save on ww2 global expansion, which I didn't have:
2.5-example-save.tsvg.zip

Engine Version

Engine Version: 2.6.811

Is there anything else we should know?

[asvitkine]

The code for this used to be here:

triplea/game-core/src/main/java/games/strategy/triplea/ResourceLoader.java

Line 93 in f516043

+ ", could not join game.\nWould you like to download the map now?"

Looks like that code moved around in the file a bit, but its removal was here:
https://github.com/triplea-game/triplea/pull/9775/files