fix(webhook): Fix publish events to EventBridge (#5143)

## Description

Rollback changes introduced on #5030. The webhook lambda in the
EventBridge mode is not supporting other events beside `workflow_job`.

## Related Issues

This PR fixes #5142.

---------

Co-authored-by: Brend Smits <brend.smits@philips.com>

Author: andrecastro

lambdas/functions/webhook/src/webhook/index.ts

@@ -21,7 +21,7 @@ export async function publishForRunners(
 
   const checkBodySizeResult = checkBodySize(body, headers);
 
-  const { event, eventType } = readEvent(headers, body, ['workflow_job']);
+  const { event, eventType } = readWorkflowJobEvent(headers, body);
   logger.info(`Github event ${event.action} accepted for ${event.repository.full_name}`);
   if (checkBodySizeResult.sizeExceeded) {
     // We only warn for large event, when moving the event bridge we can only can accept events up to 256KB
@@ -39,9 +39,16 @@ export async function publishOnEventBridge(
 
   await verifySignature(headers, body, config.webhookSecret);
 
-  const checkBodySizeResult = checkBodySize(body, headers);
+  // Check for supported event types allowed to send to event bridge
+  const eventType = headers['x-github-event'] as string;
+  checkEventIsSupported(eventType, config.allowedEvents);
 
-  const { eventType } = readEvent(headers, body, config.allowedEvents);
+  // If workflow_job event, read the event and log relevant information for monitoring and debugging purposes.
+  if (eventType === 'workflow_job') {
+    readWorkflowJobEvent(headers, body);
+  }
+
+  const checkBodySizeResult = checkBodySize(body, headers);
 
   logger.info(
     `Github event ${headers['x-github-event'] as string} accepted for ` +
@@ -126,13 +133,13 @@ function checkEventIsSupported(eventType: string, allowedEvents: string[]): void
   }
 }
 
-function readEvent(
+// Reads the workflow_job event from the request body and headers, and logs relevant information for monitoring and debugging purposes.
+function readWorkflowJobEvent(
   headers: IncomingHttpHeaders,
   body: string,
-  allowedEvents: string[],
 ): { event: WorkflowJobEvent; eventType: string } {
   const eventType = headers['x-github-event'] as string;
-  checkEventIsSupported(eventType, allowedEvents);
+  checkEventIsSupported(eventType, ['workflow_job']);
 
   const event = JSON.parse(body) as WorkflowJobEvent;
   logger.appendPersistentKeys({