Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1734022

Description of problem:

Currently there is no way to set the avoid duplicate setting in the smart variables ui.

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

Satellite 6.6 snap 13

How reproducible:
always

Steps to Reproduce:
1. In UI go to Configure > Smart Variables
2. Create s. variable or edit an existing one
3. For Default Behavior set the parameter type to array.
4. Check Merge Overrides, which makes Merge Default active. Note that Avoid duplicates remains inactive.

Actual results:
Checkbox inactive

Expected results:
Checkbox active

Additional info:
screenshot attached