Add QN-specific reinit! function

[ReubenJ]

Checklist

• I am following the contributing guidelines
• Tests are passing
• Lint workflow is passing
• Docs were updated and workflow is passing

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 99.32%. Comparing base (2c14a15) to head (2778c8c).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #15      +/-   ##
==========================================
+ Coverage   98.61%   99.32%   +0.71%     
==========================================
  Files           2        2              
  Lines         144      148       +4     
==========================================
+ Hits          142      147       +5     
+ Misses          2        1       -1     

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