Retroactively apply ACC2 coding guideline
We need to update all `input type="number"` occurrences to use `<input type="text" inputmode="numeric" pattern="[0-9]*">` as per the new accessibility guideline.
This bug split into multiple might make a good Academy task?
(In reply to Katrin Fischer from comment #1)
> This bug split into multiple might make a good Academy task?