Ensure Device Provisioning tokens removed with Team

[hardillb]

Description

This removes Team Device Provisioning tokens when team is deleted

Related Issue(s)

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

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 78.70%. Comparing base (1f241e3) to head (39fec43).
Report is 3 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4906   +/-   ##
=======================================
  Coverage   78.70%   78.70%           
=======================================
  Files         323      323           
  Lines       15230    15231    +1     
  Branches     3498     3498           
=======================================
+ Hits        11987    11988    +1     
  Misses       3243     3243           

Flag	Coverage Δ
backend	78.70% <100.00%> (+<0.01%)	⬆️

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[hardillb]

There was an intermittent UI tests failure after I fixed forcing the team id to be a string.