[PM-7750] add error handling to runtime.background messaging

[jlf0dev]

Type of change

- [x] Bug fix
- [ ] New feature development
- [ ] Tech debt (refactoring, code cleanup, dependency upgrades, etc)
- [ ] Build/deploy pipeline (DevOps)
- [ ] Other

Objective

adds error handling to our background messages.

Code changes

• file.ext: Description of what was changed and why

Screenshots

Before you submit

• Please add unit tests where it makes sense to do so (encouraged but not required)
• If this change requires a documentation update - notify the documentation team
• If this change has particular deployment requirements - notify the DevOps team
• Ensure that all UI additions follow WCAG AA requirements

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 3 lines in your changes are missing coverage. Please review.

Project coverage is 27.75%. Comparing base (6ae086f) to head (cbf8068).

Files	Patch %	Lines
apps/browser/src/background/runtime.background.ts	0.00%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #8949      +/-   ##
==========================================
- Coverage   27.75%   27.75%   -0.01%     
==========================================
  Files        2392     2392              
  Lines       69338    69340       +2     
  Branches    12932    12932              
==========================================
  Hits        19243    19243              
- Misses      48646    48648       +2     
  Partials     1449     1449              

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[github-actions]

Checkmarx One – Scan Summary & Details – c86842ce-8a58-4e73-978b-11ff7e37afca

No New Or Fixed Issues Found