GROOVY-11663: STC: error for class or trait property expression

[eric-milles]

property and attribute have very similar checking and reporting

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 89.47368% with 6 lines in your changes missing coverage. Please review.

Project coverage is 69.1607%. Comparing base (d51a0b6) to head (bb5b1f1).
Report is 102 commits behind head on master.

Files with missing lines	Patch %	Lines
...va/org/codehaus/groovy/control/StaticVerifier.java	82.3529%	1 Missing and 2 partials ⚠️
...oovy/transform/stc/TraitTypeCheckingExtension.java	85.0000%	0 Missing and 3 partials ⚠️

Additional details and impacted files

@@                Coverage Diff                 @@
##               master      #2221        +/-   ##
==================================================
+ Coverage     68.9964%   69.1607%   +0.1642%     
- Complexity      29668      30552       +884     
==================================================
  Files            1423       1423                
  Lines          114332     116867      +2535     
  Branches        19835      20297       +462     
==================================================
+ Hits            78885      80826      +1941     
- Misses          28816      29342       +526     
- Partials         6631       6699        +68     

Files with missing lines	Coverage Δ
...roovy/transform/stc/StaticTypeCheckingVisitor.java	87.5493% <100.0000%> (+0.0493%)	⬆️
...va/org/codehaus/groovy/control/StaticVerifier.java	94.0000% <82.3529%> (+0.1225%)	⬆️
...oovy/transform/stc/TraitTypeCheckingExtension.java	84.6154% <85.0000%> (+0.2404%)	⬆️

... and 6 files with indirect coverage changes

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