Hotfix: Controller shop navigation & difficulty modifier #1 (Demo)

Hello Allies!

Thanks for all the bug reports on controller navigation in the shop being bugged - these issues should now be resolved.

Additionally, the first difficulty modifier, "Exhaustion", was unintentionally setting allies' health to 1 in the next level, instead of 50% as was intended. This has also been fixed.

I am aware of other minor bugs, especially around allies reviving during combat to the wrong space in the chain, either overlapping other allies or skipping a spot entirely. These bugs normally resolve themselves at the start of each new level when the chain's layout is hard-reset. I will endeavour to fix these soon, but will be prioritising game-crashing, soft-locking and experience-lowering bugs, such as the ones above!

Thank you for your understanding, and please continue to report anything you come across!