disable connector dropdown in integration tab on save

[Kelsey-Ethyca]

Closes #3535

Code Changes

Updated the ConnectionListDropdown to be disabled when a connectionConfig is saved.

Steps to Confirm

• create a new system
• nav to the integration tab - see that the dropdown in enabled and no connector is saved
• use the dropdown to create a connector
• fill in the form
• click save
• verify that once the connector saved the dropdown is disabled
• delete the connector
• verify the dropdown is enabled again

Pre-Merge Checklist

• All CI Pipelines Succeeded
• Documentation:
  • documentation complete, PR opened in fidesdocs
  • documentation issue created in fidesdocs
• Issue Requirements are Met
• Relevant Follow-Up Issues Created
• Update CHANGELOG.md
• For API changes, the Postman collection has been updated

[cypress]

Passing run #2651 ↗︎

0	4	0	0	0
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Details:

Merge 27697a4 into ed56a20...
Project: fides	Commit: e8db31944f ℹ️
Status: Passed	Duration: 00:47 💡
Started: Jun 13, 2023 5:21 PM	Ended: Jun 13, 2023 5:21 PM

_{This comment has been generated by cypress-bot as a result of this project's GitHub integration settings.}

[TheAndrewJackson]

🚀