Syrangwr crashing game when all tasks are done

[Cece-2552]

not sure if is the same but

@GnomeSayin-11972

Fixed a bug where the game would crash if you got a Mysterious Stranger encounter after already completing all Tasks for all Mercenaries you own. Now, if there are not enough visitors with available Tasks to fill the three options, it will select random Mercenaries to fill those slots. You will then be able to select a Mercenary as normal and, if that Mercenary does not have any Tasks to offer, you will get Coins for that Mercenary.