Combination of Mystic + Patchwork (?) hung the game

[xiaat]

Link to bug replay: https://jinteki.net/bug-report/f658c99f-c8d4-4493-b66b-53ffc97f1586?b=0

Description:

After an attempt to play an event off 0 credits while having 1 on Maemi and having Patchwork installed the game entered a permanent state of asking the Runner to select a card to spend 2 credits off. close-prompt didn't help, and with undoing clicks and the turn the game eventually was FUBAR

[NBKelly]

I think the front-end lockup should be fixed by #7941 (next release). I'll still need to solve the underlying issue (which I think to be declining patchwork and then not being able to afford the card), but until then these lockups can be fixed by refreshing your page (and then issuing commands or whatever else).