fix(core): normalize boolean range predicates in Gremlin filters

[contrueCT]

Purpose of the PR

• fix [Bug] Unexpected NumberFormatException for filter-step #2934

This PR fixes HugeGraph's inconsistent handling of boolean range predicates and unifies the internal ordering semantics as false < true. Previously, filter-step queries such as where(__.has("xxx", P.lt(true))) were pushed down through HugeGraph's condition/query pipeline and incorrectly treated as numeric-style range conditions, while equivalent match() queries could still return results normally. As a result, semantically equivalent traversals behaved differently.

Main Changes

The fix has two parts. First, boolean support is added to backend condition comparison and range-flattening logic so gt/gte/lt/lte can be evaluated consistently. Second, runtime Gremlin boolean range predicates are normalized into equivalent eq/in/empty conditions before query planning, so they are no longer misclassified as ordinary numeric range queries that require a range index. This preserves the intended boolean ordering semantics while making has(), where(), and match() behave consistently for boolean range predicates.

Verifying these changes

Regression coverage was also added for:

• low-level boolean lt/lte/gt/gte comparison semantics
• boolean range merge and conflicting-range flattening
• end-to-end consistency across has(), where(), and match()
• empty-result edge cases such as lt(false) and gt(true)

• Trivial rework / code cleanup without any test coverage. (No Need)
• Already covered by existing tests, such as (please modify tests here).
• Need tests and can be verified as follows:
  • mvn -Drat.skip=true -P core-test,memory -pl hugegraph-server/hugegraph-test,hugegraph-struct -am -DfailIfNoTests=false '-Dtest=ConditionTest,ConditionQueryFlattenTest,EdgeCoreTest#testQueryEdgeByBooleanRangePredicate' clean test

Does this PR potentially affect the following parts?

• Dependencies (add/update license info & regenerate_known_dependencies.sh)
• Modify configurations
• The public API
• Other affects (typed here)
• Nope

Documentation Status

• Doc - TODO
• Doc - Done
• Doc - No Need