Various Tweaks - Adventure Event Ante and Keyboard Input

[Jetz72]

• Fixes an internal NPE that appeared here (though obviously the performance hang with large numbers of tokens isn't going anywhere any time soon).
• Add support for Page Up/Down and the arrow keys to the mobile deck editor. Closes Add Page-up/down scroll functionality in inventory/deck. #9578.
• As part of the above - Previously arrow keys would always be treated as a fling gesture in the LibGDX port. Now they're passed to a keyDown event if the fling event goes unhandled. It's possible there are side effects since this tweak applies across all UIs, but I didn't encounter any in my testing.
• Ante results in adventure events now apply to the player's current event deck instead of their inventory.
• Ante results in adventure matches with multiple games now apply results from all games instead of just the last one.

[Hanmac]

i picked the NPE fix

what also could have worked:
player.equals(event.result().getWinningLobbyPlayer());
because player should not be null?

[Jetz72]

what also could have worked:
player.equals(event.result().getWinningLobbyPlayer());
because player should not be null?

Wasn't sure at the time if player would be null while spectating a game with only AI players. Decided using Objects.equals was easier than digging through the code to find out if it actually worked that way.