[AUTO-906] Calling an "incoming webhook" trigger with a payload greater than ~1MB doesn't execute but returns 200 OK

Payloads over 1MB do not trigger the incoming webhook trigger, however still return a 200 OK response.

Create an automation rule in Jira Cloud with "Incoming webhook" trigger and "Log action".
Send a POST request to the webhook with the attached test_OK.json as body.
The response is HTTP 200 and the Audit log reflects that the trigger is invoked. :check_mark:
Send a POST request to the webhook with the attached test_NOT_OK.json as body.
The response is HTTP 200, however the trigger is not getting invoked according to the Audit log. No error is displayed. :cross_mark:

The appropriate HTTP error code.

The execution does not get triggered, but the response from the request is 200 OK.

None really, ensure payloads are less than the limit.

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