Add assistant update available banner to FF expert

[Steve-Mcl]

Description

• Applies supplied updates object to store pro (on init) & maps new event (for reactivity)
• Adds UI element to display the update banner

Related Issue(s)

closes #6763

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

[Steve-Mcl]

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 76.60%. Comparing base (80b80f7) to head (c86841d).
⚠️ Report is 16 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #6764   +/-   ##
=======================================
  Coverage   76.60%   76.60%           
=======================================
  Files         398      398           
  Lines       20122    20122           
  Branches     4844     4844           
=======================================
  Hits        15414    15414           
  Misses       4708     4708           

Flag	Coverage Δ
backend	76.60% <ø> (ø)

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[Steve-Mcl]

Switching to draft temporarily while a last minute change to RED API is made

[Steve-Mcl]

@dimitrieh if you wish to review, this is the PR for update banner.

[Steve-Mcl]

created component as requested

[Steve-Mcl]

Test fail: Segmentation fault (core dumped) Error: Process completed with exit code 139

Re-running

[cstns]

I love it when we make our lives easier