Bug 28283: Add `inputmode="numeric"` to quantity on orderreceive

Bug 28283: Add `inputmode="numeric"` to quantity on orderreceive

This patch adds an inputmode to the quantity field on the order receive
page in acquisitions.

Test plan
1. Go to Acquisitions -> Vendor -> Invoices -> Invoice -> Go to receipt
   page -> Receive.
2. Note that the 'Quantity received' input has an inputmode now.
3. Note that the 'Quantity received' input also has a pattern attribute.
4. Note that you should not be able to enter non-integer values.

Signed-off-by: Owen Leonard <oleonard@myacpl.org>
Signed-off-by: Katrin Fischer <katrin.fischer.83@web.de>
Signed-off-by: Jonathan Druart <jonathan.druart@bugs.koha-community.org>