Remove ui-build after building wheel

[sanders41]

Closes #2491

Code Changes

• Removes the ui-build directory after the wheel build is completed

Steps to Confirm

• Run nox -s "fides_env(test)"
• Navigate to http://localhost:8080 and log in
• Navigate to any page that has a route after the /, such as http://localhost:8080/add-systems
• Refresh the browser and verify the page loads with no error.

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

Description Of Changes

Write some things here about the changes and any potential caveats

[SteveDMurphy]

Confirmed the change works! Open question potentially around the removal of the volume mount going forward. I might try testing a built version as well...

[codecov]

Codecov Report

Base: 88.45% // Head: 88.45% // No change to project coverage 👍

Coverage data is based on head (91e8f2c) compared to base (6f88689).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #2500   +/-   ##
=======================================
  Coverage   88.45%   88.45%           
=======================================
  Files         327      327           
  Lines       15957    15957           
  Branches     4431     4431           
=======================================
  Hits        14115    14115           
  Misses       1688     1688           
  Partials      154      154           

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