regression: broken incoming webhook validation

[abhinavkrin]

Proposed changes (including videos or screenshots)

This PR fixes an issue which made the validation to not work for incoming webhooks in public rooms.

Issue(s)

Steps to test or reproduce

1. Create an incoming webhook with a public room.
2. Call the webhook endpoint with the appropriate message payload. The webhook url last part should be modified to simulate invalid token.
3. Check that the message is not sent to the room

Further comments

CORE-1161

[dionisio-bot]

Looks like this PR is ready to merge! 🎉
If you have any trouble, please check the PR guidelines

[changeset-bot]

⚠️ No Changeset found

Latest commit: 932efc6

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[github-actions]

PR Preview Action v1.6.1
🚀 View preview at https://RocketChat.github.io/Rocket.Chat/pr-preview/pr-36059/
Built to branch gh-pages at 2025-05-23 13:39 UTC. Preview will be ready when the GitHub Pages deployment is complete.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 64.76%. Comparing base (f26a496) to head (932efc6).
Report is 5 commits behind head on release-7.7.0.

Additional details and impacted files

@@                Coverage Diff                @@
##           release-7.7.0   #36059      +/-   ##
=================================================
+ Coverage          64.74%   64.76%   +0.01%     
=================================================
  Files               3110     3110              
  Lines              93179    93180       +1     
  Branches           17751    17766      +15     
=================================================
+ Hits               60332    60350      +18     
+ Misses             30059    30047      -12     
+ Partials            2788     2783       -5     

Flag	Coverage Δ
e2e	58.41% <ø> (+<0.01%)	⬆️
unit	71.55% <ø> (+0.02%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.
• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.

[julio-rocketchat]

LGTM