[KYUUBI #1057] [KYUUBI#1056] Output error log when currentEngine is None

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### _Why are the changes needed?_
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When createSpark in SparkSqlEngine get sparksession or execute initialize.sql failed, we cannot get any error info in logs. At this time, currentEngine is None.

### _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/latest/develop_tools/testing.html#running-tests) locally before make a pull request

Closes #1057 from hddong/engine-fix.

Closes #1057

44ead3b [hongdongdong] fix
3462d36 [hongdongdong] [KYUUBI#1056] Output error log when currentEngine is None

Authored-by: hongdongdong <hongdongdong@cmss.chinamobile.com>
Signed-off-by: Kent Yao <yao@apache.org>
(cherry picked from commit 8886513)
Signed-off-by: Kent Yao <yao@apache.org>

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

@@ -146,14 +146,16 @@ object SparkSQLEngine extends Logging {
       // blocking main thread
       countDownLatch.await()
     } catch {
-      case t: Throwable =>
+      case t: Throwable if currentEngine.isDefined =>
         currentEngine.foreach { engine =>
           val status =
             engine.engineStatus.copy(diagnostic = s"Error State SparkSQL Engine ${t.getMessage}")
           EventLoggingService.onEvent(status)
           error(status, t)
           engine.stop()
         }
+      case t: Throwable =>
+        error("Create SparkSQL Engine Failed", t)
     } finally {
       if (spark != null) {
         spark.stop()