Fix view engine missing in webhook server

[yoshino-s]

Summary

Fix view engine missing in webhook server

Related tickets and issues

https://github.com/n8n-io/n8n/issues/9223 https://github.com/n8n-io/n8n/issues/7538

Review / Merge checklist

• [x] PR title and summary are descriptive. Remember, the title automatically goes into the changelog. Use (no-changelog) otherwise. (conventions)
• [x] Docs updated or follow-up ticket created.
• [x] Tests included.

  A bug is not considered fixed, unless a test is added to prevent it from happening again. A feature is not complete without tests.

[Joffcom]

Hey @Yoshino-s,

Thanks for the PR, I updated the description to include the first error report we had for this. I will link this PR to the internal dev ticket we have opened for this for review.

[janober]

Got released with [email protected]