[2120907] Cannot filter disks by label

Description of problem:
Cannot filter disks by label

Version-Release number of selected component (if applicable):
v4.12.0

How reproducible:

Steps to Reproduce:
1. add some disks to the vm
2. filter disk by label in the vm disks tab
3.

Actual results:
it does not work

Expected results:
the filter works

Additional info: