Remove manual system selection

[TheAndrewJackson]

Closes #3774

Description Of Changes

Removes the manual selection screen. Clicking the Add a system button will now bring you directly to the system creation form.

new_flow.mov

Code Changes

• Remove the system selection screen
• Update tests to handle removed screen

Steps to Confirm

• run fides nox -s dev and the admin UI turbo run dev
• Go to the add systems page and click the add system button
• It should bring you straight to the form

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 #3368 ↗︎

0	4	0	0	0
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Details:

Merge cfd5d7b into 6e1b4dd...
Project: fides	Commit: 62becee974 ℹ️
Status: Passed	Duration: 01:02 💡
Started: Jul 27, 2023 7:17 PM	Ended: Jul 27, 2023 7:18 PM

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

[allisonking]

ah, love seeing chunks of red. goodbye code! 👋