🐛 Fix stale wizard state when navigating between assessments

[ibolton336]

• Fixes an issue previously worked around by refreshing the sections when the assessment was being fetched. This can be solved by conditional rendering the entire wizard.
• Removes old isOpen props & state
• Fixes retake by removing a history.push to the previous assessment.id
• Adds an error alert to indicate a failed assessment fetch

[codecov]

Codecov Report

All modified lines are covered by tests ✅

Comparison is base (a7d5d84) 40.69% compared to head (79a0bc0) 40.69%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1484   +/-   ##
=======================================
  Coverage   40.69%   40.69%           
=======================================
  Files         139      139           
  Lines        4463     4463           
  Branches     1067     1067           
=======================================
  Hits         1816     1816           
  Misses       2552     2552           
  Partials       95       95           

Flag	Coverage Δ
client	40.69% <ø> (ø)
server	∅ <ø> (∅)

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