[iOS] Budgets bug

Issue:
When you are creating a budget, if you try to zero all your bills, and scroll to the bottom, all the bills at the top that are now out off view reset to their original value, and the same if you then scroll to the top and change their value, and the bottom values are out of view

Details to reproduce:
When you are creating a budget, if you try to zero all your bills, and scroll to the bottom, all the bills at the top that are now out off view reset to their original value, and the same if you then scroll to the top and change their value, and the bottom values are out of view

OS:
Apple
Device:
IPhone 8
App Version:
monzo labs new version
Screenshots: