e2e tests pipeline preview error fix

Author: itsmekumari

mysql-plugin/src/e2e-test/features/mysqlsource/RunTime.feature

@@ -142,7 +142,7 @@ Feature: MySQL Source - Run time scenarios
     Then Close the Plugin Properties page
     Then Save the pipeline
     Then Preview and run the pipeline
-    Then Wait till pipeline preview is in running state
+    Then Wait till pipeline preview is in running state and check if any error occurs
     Then Open and capture pipeline preview logs
     Then Verify the preview run status of pipeline in the logs is "failed"
 

oracle-plugin/src/e2e-test/features/source/OracleRunTime.feature

@@ -296,7 +296,7 @@ Feature: Oracle - Verify data transfer from Oracle source to BigQuery sink
     Then Close the Plugin Properties page
     Then Save the pipeline
     Then Preview and run the pipeline
-    Then Wait till pipeline preview is in running state
+    Then Wait till pipeline preview is in running state and check if any error occurs
     Then Verify the preview run status of pipeline in the logs is "failed"
 
   @ORACLE_SOURCE_TEST @BQ_SINK_TEST