Searchable select visual cache doesn't get cleared when the value is no longer valid

[Skaiir]

Related Support Ticket - https://jira.camunda.com/browse/SUPPORT-20593

Describe the Bug

The searchable select doesn't clean up properly when an allowed option is no longer allowed. The underlying value gets set to null as expected but it remains visually.

Steps to Reproduce

1. Add a searchable select select1 with static values a and b
2. Add a second searchable select with dynamic value if select1 = "a" then ["a1", "a2"] else ["b1", "b2"]
3. Select "a" on select1
4. Select "a1" on the other select
5. Select "b" on select1
6. Other select isn't cleared, but underlying data is indeed cleared properly

Expected Behavior

6. The field should be visually cleared