GROOVY-12267: Remove the dead declared-method check from JMX operatio…

[paulk-asert]

…n export

buildOperationMapFrom guarded operation export with

(declaredMethods.contains(name) && !OPS_EXCEPTION_LIST.contains(name))
|| (!OPS_EXCEPTION_LIST.contains(name))

which reduces to its right operand, so the declaredMethods lookup above it was computed and never used and the comment claiming it avoided methods from parents described something the code did not do.

Drop the dead operand and the unused lookup, and state the actual contract in the javadoc: the default export spans the whole inheritance chain, and a caller wanting a narrower set names the operations explicitly in a descriptor.

Behaviour is unchanged. Making the declared-method check live instead was considered and rejected: JmxBuilder's own embedded-descriptor fixtures declare their operations on a base class, and 'operations: ""' routes to this method and has to mean all of them, so restricting to declared methods breaks four existing tests and gives '' a meaning it should not have.

Adds two tests pinning behaviour that was previously untested: inherited operations are exported, and getMetaClass/setMetaClass are not, the latter because they resolve to the metaClass MetaProperty and are dropped by the getter/setter filter.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 70.1574%. Comparing base (5f56279) to head (6b6b1d0).

Additional details and impacted files

@@                Coverage Diff                 @@
##               master      #2804        +/-   ##
==================================================
+ Coverage     70.1516%   70.1574%   +0.0058%     
- Complexity      35828      35829         +1     
==================================================
  Files            1562       1562                
  Lines          132523     132522         -1     
  Branches        24379      24379                
==================================================
+ Hits            92967      92974         +7     
+ Misses          31140      31136         -4     
+ Partials         8416       8412         -4     

Files with missing lines	Coverage Δ
...groovy/groovy/jmx/builder/JmxMetaMapBuilder.groovy	77.6978% <100.0000%> (+0.2785%)	⬆️

... and 5 files with indirect coverage changes

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[testlens-app]

✅ All tests passed ✅

🏷️ Commit: 6b6b1d0
▶️ Tests: 110479 executed
⚪️ Checks: 31/31 completed

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