feat(query): enforce SPARQL 3-valued logic and type errors for value comparisons (#594)

[remiceres]

Closes #594

Summary

Enforces W3C SPARQL 1.1 3-valued logic and type errors on value equality and inequality comparisons when operands have incompatible or unknown custom datatypes.

Changes

• : implement with term equality shortcut (), typed comparisons, and explicit on incomparable/unknown literal datatypes.
• : use for , , and without swallowing type errors prematurely.
• : permit runtime evaluation of non-boolean literals in logical expressions to allow absorption ().
• : comprehensive parameterized test suites covering truth tables, preserved errors, and filter behavior.

W3C Conformance

• Fixes 9 tests in SPARQL 1.0 test suite (, , , , , , , and both boolean effective value tests).
• Total W3C failures drop from 50 to 41.

[github-actions]

Overall Project	55.5%	🍏
Files changed	98.48%	🍏

File	Coverage
NativeValueComparison.java	90.2% -0.78%	🍏
SemanticValidationUtils.java	86.94%	🍏
NativeBooleanExpressionEvaluator.java	82.83%	🍏