[7320] Live team updates over MQTT/WS

[n-lark]

Description

See test plan and details.

Related Issue(s)

Resolves #7320

Checklist

• I have read the contribution guidelines
• Suitable unit/system level tests have been added and they pass
• Documentation has been updated
  • Upgrade instructions
  • Configuration details
  • Concepts
• Changes flowforge.yml?
  • Issue/PR raised on FlowFuse/helm to update ConfigMap Template
  • Issue/PR raised on FlowFuse/CloudProject to update values for Staging/Production
• Link to Changelog Entry PR, or note why one is not needed.

Labels

• Includes a DB migration? -> add the area:migration label

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.73%. Comparing base (d6d525f) to head (7ca0035).

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7327      +/-   ##
==========================================
+ Coverage   76.66%   76.73%   +0.07%     
==========================================
  Files         410      410              
  Lines       20874    20937      +63     
  Branches     5066     5085      +19     
==========================================
+ Hits        16004    16067      +63     
  Misses       4870     4870              

Flag	Coverage Δ
backend	76.73% <100.00%> (+0.07%)	⬆️

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

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

🚀 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.