Add more constraints to QN grammars

[ReubenJ]

This PR adds two constraints on QN grammars

• Constrain Ceil and Floor in QN grammar to not directly include a entity or constant
• Forbid ceil(floor)

Related issues

There is no related issue.

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 98.61%. Comparing base (462ea81) to head (08dbe41).
Report is 1 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #14      +/-   ##
==========================================
+ Coverage   98.55%   98.61%   +0.06%     
==========================================
  Files           2        2              
  Lines         138      144       +6     
==========================================
+ Hits          136      142       +6     
  Misses          2        2              

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