fix: ensure a hosted server handles it's public url correctly in webhooks

[icehaunter]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 90.90909% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 66.69%. Comparing base (842182d) to head (ba23145).
✅ All tests successful. No failed tests found.

Files with missing lines	Patch %	Lines
packages/agents-server/src/server.ts	90.90%	1 Missing ⚠️

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4178   +/-   ##
=======================================
  Coverage   66.68%   66.69%           
=======================================
  Files         140      140           
  Lines       16991    16997    +6     
  Branches     4145     4145           
=======================================
+ Hits        11331    11336    +5     
- Misses       5656     5657    +1     
  Partials        4        4           

Flag	Coverage Δ
packages/agents	47.33% <ø> (ø)
packages/agents-runtime	81.34% <ø> (ø)
packages/agents-server	65.68% <90.90%> (+0.03%)	⬆️
packages/agents-server-ui	0.00% <ø> (ø)
packages/electric-ax	31.19% <ø> (ø)
packages/experimental	87.73% <ø> (ø)
packages/react-hooks	86.48% <ø> (ø)
packages/start	82.83% <ø> (ø)
packages/typescript-client	94.30% <ø> (ø)
packages/y-electric	56.05% <ø> (ø)
typescript	66.69% <90.90%> (+<0.01%)	⬆️
unit-tests	66.69% <90.90%> (+<0.01%)	⬆️

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

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

🚀 New features to boost your workflow:

• 📦 JS Bundle Analysis: Save yourself from yourself by tracking and limiting bundle sizes in JS merges.