[DSG] Option to expand PV does not work when it is not connected to any workbenches

Description of problem:

if users tried to expand the size of a PV which is not connected to any workbenches, they can still edit the field from "Edit storage" menu, but the action does not have any effect.

Prerequisites (if any, like setup, operators/versions):

RHODS installed

DS Project created

Steps to Reproduce

1. create a PV storage in the DS Project
2. click on "Edit storage" from 3dots menu on the right
3. increase the PV size

Actual results:

nothing happens

Expected results:

size field cannot be modified if the PV is not connected to a workbench

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

RHODS v1.22.0-2

Workaround:

Additional info: