+++ This bug was initially created as a clone of Bug #2111240 +++

Description of problem:
GiB changes to B for the Disk size field, in Edit boot source reference modal, when editing VM Template's boot source reference.

Version-Release number of selected component (if applicable):
4.11

How reproducible:
always

Steps to Reproduce:
1. Go to VM Template list
2. For some template, choose Edit boot source reference - Actions column
3. In the modal, edit Disk size field: click into the field and try to write any char (does not matter if number or not) or delete the default value that is 30.

Actual results:
The unit GiB disappears, then 0 B appears, no matter the user writes in the field.

Expected results:
The unit GiB stays displayed and the value can be edited normally.

Additional info:

— Additional comment from Guohua Ouyang on 2022-07-27 07:37:22 CST —

It happens everywhere if there is a disk size field: in the catalog, in the disk modal etc.

— Additional comment from Yifat Menchik on 2022-07-27 23:32:20 CST —

After discussing this with phbailey@redhat.com, his suggestion seems good and reasonable to me. So agreed that instead of using dynamic units, we'll use a dropdown for the units and make it more consistent with other modals we have.

— Additional comment from Guohua Ouyang on 2022-08-19 08:27:55 CST —

verified on v4.12.0-106