Bulk Create/Update/Delete/Upsert action should not be triggered when input message is not `csv`

[stas-fomenko]

STR:

1. create flow: simple trigger -> Bulk Create/Update/Delete/Upsert action
2. start flow.

AR: action triggered and it passes "attachments":{},"body":{},"headers":{},"metadata":{},"passthrough": {....passthrough...} to next step
logs:

[2021-02-01 20:54:28.613]: [INFO  tini (1)] Spawned child process '/run.sh' with pid '6'
[2021-02-01 20:54:28.613]: Starting application in apprunner...
[2021-02-01 20:54:28.617]: Will try to start app at /home/apprunner
[2021-02-01 20:54:28.617]: node: /usr/lib/libstdc++.so.6: no version information available (required by node)
[2021-02-01 20:54:28.618]: node: /usr/lib/libstdc++.so.6: no version information available (required by node)
[2021-02-01 20:54:28.618]: node: /usr/lib/libstdc++.so.6: no version information available (required by node)
[2021-02-01 20:54:28.618]: node: /usr/lib/libstdc++.so.6: no version information available (required by node)
[2021-02-01 20:54:28.618]: node: /usr/lib/libstdc++.so.6: no version information available (required by node)
[2021-02-01 20:54:28.618]: node: /usr/lib/libstdc++.so.6: no version information available (required by node)
[2021-02-01 20:54:28.618]: node: /usr/lib/libstdc++.so.6: no version information available (required by node)
[2021-02-01 20:54:28.618]: node: /usr/lib/libstdc++.so.6: no version information available (required by node)
[2021-02-01 20:54:30.245]: invokeModuleFunction – init is not found
[2021-02-01 20:54:30.253]: Checking if incoming messages is lightweight...
[2021-02-01 20:54:30.253]: Checking if incoming messages is lightweight...
[2021-02-01 20:54:30.256]: Attachment not found
[2021-02-01 20:54:30.256]: Starting Bulk insert action
[2021-02-01 20:55:18.177]: Received SIGTERM
[2021-02-01 20:55:18.178]: Disconnecting...
[2021-02-01 20:55:18.199]: Successfully disconnected
[2021-02-01 20:55:18.216]: [INFO  tini (1)] Main child exited normally (with status '0')

ER: step 2 is not triggered in case when csv not passed from previous step