[KYUUBI apache#4267] Show warning if SessionHandle is invalid

### _Why are the changes needed?_
If SessionManager tries to close a session, that was previously closed - it throws an error `org.apache.kyuubi.KyuubiSQLException: Invalid SessionHandle` which causes spark session exit with non-zero code.

### _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

- [X] [Run test](https://kyuubi.readthedocs.io/en/master/develop_tools/testing.html#running-tests) locally before make a pull request

Closes apache#4386 from hanna-liashchuk/catch-invalid-sessionhandle.

Closes apache#4267

bf364ba [Hanna Liashchuk] Show warning if SessionHandle is invalid

Authored-by: Hanna Liashchuk <g.liashchuk@temabit.com>
Signed-off-by: Cheng Pan <chengpan@apache.org>

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

@@ -164,7 +164,12 @@ class SparkSQLSessionManager private (name: String, spark: SparkSession)
         }
       }
     }
-    super.closeSession(sessionHandle)
+    try {
+      super.closeSession(sessionHandle)
+    } catch {
+      case e: KyuubiSQLException =>
+        warn(s"Error closing session ${sessionHandle}", e)
+    }
     if (shareLevel == ShareLevel.CONNECTION) {
       info("Session stopped due to shared level is Connection.")
       stopSession()