Force password reset for existing unverified accounts on first SSO login

[hardillb]

fixes FlowFuse/security#113

Description

On first SSO loging if the email is not verified change the exising user password to a random string.

Related Issue(s)

FlowFuse/security#113

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

❌ Patch coverage is 14.28571% with 6 lines in your changes missing coverage. Please review.
✅ Project coverage is 76.60%. Comparing base (cabf53f) to head (86b7ab8).
⚠️ Report is 5 commits behind head on main.

Files with missing lines	Patch %	Lines
forge/lib/userTeam.js	14.28%	6 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #7149      +/-   ##
==========================================
- Coverage   76.62%   76.60%   -0.03%     
==========================================
  Files         405      405              
  Lines       20566    20573       +7     
  Branches     4972     4973       +1     
==========================================
+ Hits        15758    15759       +1     
- Misses       4808     4814       +6     

Flag	Coverage Δ
backend	76.60% <14.28%> (-0.03%)	⬇️

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