[KYUUBI #2440] [Improvement] spark engine event add endTime when it is stopped

### _Why are the changes needed?_

spark engine event add endTime when it is stopped
### _How was this patch tested?_
- [ ] Add some test cases that check the changes thoroughly including negative and positive cases if possible

- [ ] Add screenshots for manual tests if appropriate

- [ ] [Run test](https://kyuubi.apache.org/docs/latest/develop_tools/testing.html#running-tests) locally before make a pull request

Closes #2441 from zhaomin1423/fix_spark_event.

Closes #2440

4ca2ec6 [Min Zhao] [KYUUBI #2440] [Improvement] spark engine event add endTime when it is stopped

Authored-by: Min Zhao <zhaomin1423@163.com>
Signed-off-by: ulysses-you <ulyssesyou@apache.org>

Author: zhaomin1423

externals/kyuubi-spark-sql-engine/src/main/scala/org/apache/kyuubi/engine/spark/SparkSQLEngine.scala

@@ -289,7 +289,8 @@ object SparkSQLEngine extends Logging {
           case e: KyuubiException => currentEngine match {
               case Some(engine) =>
                 engine.stop()
-                val event = EngineEvent(engine).copy(diagnostic = e.getMessage)
+                val event = EngineEvent(engine)
+                  .copy(endTime = System.currentTimeMillis(), diagnostic = e.getMessage)
                 EventBus.post(event)
                 error(event, e)
               case _ => error("Current SparkSQLEngine is not created.")