Description of problem:

Move Sink is not working for Event Source though Move Sink Action menu.

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

Install Serverless Operator

Steps to Reproduce

1. Create an Event Source with sink option URI
2. In Topology click on Event Source and select the action option Move Sink
3. Change the move sink option to Resource.
4. See Save button is still disabled

Actual results:

Save button always disabled

Expected results:

Save button should enable on sink change 

Reproducibility (Always/Intermittent/Only Once):

Always

Build Details:

4.7.0-0.nightly-2020-12-18-031435

Additional info: