fix: ensure absence of a materializer doesn't crash SLC

[icehaunter]

No description provided.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.70%. Comparing base (f6e7c75) to head (a54e48c).
⚠️ Report is 3 commits behind head on main.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3640      +/-   ##
==========================================
- Coverage   87.76%   87.70%   -0.06%     
==========================================
  Files          18       18              
  Lines        1676     1676              
  Branches      424      428       +4     
==========================================
- Hits         1471     1470       -1     
- Misses        203      204       +1     
  Partials        2        2              

Flag	Coverage Δ
packages/experimental	87.73% <ø> (ø)
packages/react-hooks	86.48% <ø> (ø)
packages/typescript-client	93.58% <ø> (-0.09%)	⬇️
packages/y-electric	56.05% <ø> (ø)
typescript	87.70% <ø> (-0.06%)	⬇️
unit-tests	87.70% <ø> (-0.06%)	⬇️

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.

[github-actions]

This PR has been released! 🚀

The following packages include changes from this PR:

• @core/[email protected]

Thanks for contributing to Electric!