feat: Support Spark expression hour_of_time#3615
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Which issue does this PR close?
Closes #3126
Rationale for this change
Comet previously did not support the Spark
HourOfTimeexpression, so queries using hour(time_expr) could fall back to JVM execution instead of running natively.What changes are included in this PR?
This change adds a Serde handler for HourOfTime that reuses the existing Hour protobuf and Rust implementation, ensuring consistent behavior while avoiding new native code paths.
How are these changes tested?
Added a Scala unit test HourOfTime expression support in CometExpressionSuite
./mvnw test -Dsuites="org.apache.comet.CometSqlFileTestSuite hour,org.apache.comet.CometExpressionSuite hour" -Dtest=none./mvnw clean compile -DskipTests