Expose NumberInRange operator in workflow builder UI

The (Number) in range operator was already implemented in the evaluation
engine and BinaryStatement union but was not included in the introspection
export, making it invisible to the workflow builder UI.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>

Author: patricknihranz

inference/core/workflows/core_steps/common/query_language/introspection/core.py

@@ -16,6 +16,7 @@
     NotEquals,
     NumberGreater,
     NumberGreaterEqual,
+    NumberInRange,
     NumberLower,
     NumberLowerEqual,
     OperationsChain,
@@ -104,6 +105,7 @@ def prepare_operators_descriptions() -> List[OperatorDescription]:
         NumberLower,
         NumberGreaterEqual,
         NumberGreater,
+        NumberInRange,
         NotEquals,
         Equals,
         Exists,