Ensure a CQL expression referencing an abstract class/non-retrievable class, such as DomainResource, will fail.

[lukedegruchy]

• Update all ModelInfo XMLs to mark DomainResource as retrievable false
• Add a new test to ensure that an expression referencing DomainResource will fail with an expected error that the class is not retrievable

Closes #1392

[github-actions]

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[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.74%. Comparing base (c074fae) to head (62aedf4).
Report is 1 commits behind head on master.

Additional details and impacted files

@@            Coverage Diff            @@
##             master    #1404   +/-   ##
=========================================
  Coverage     63.74%   63.74%           
  Complexity     2666     2666           
=========================================
  Files           493      493           
  Lines         27782    27782           
  Branches       5523     5523           
=========================================
+ Hits          17709    17711    +2     
+ Misses         7830     7828    -2     
  Partials       2243     2243           

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