Enhance remote instance editor with connection polling, communication…

[cstns]

Description

handle redirect when device comms are broken within the immersive editor

Related Issue(s)

closes #6645
part of #6599

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 76.66%. Comparing base (e59695b) to head (4357bc7).

Additional details and impacted files

@@                                       Coverage Diff                                        @@
##           6599_add-the-drawer-and-expert-to-the-immersive-remote-instance    #6647   +/-   ##
================================================================================================
  Coverage                                                            76.66%   76.66%           
================================================================================================
  Files                                                                  398      398           
  Lines                                                                20103    20103           
  Branches                                                              4841     4841           
================================================================================================
  Hits                                                                 15411    15411           
  Misses                                                                4692     4692           

Flag	Coverage Δ
backend	76.66% <ø> (ø)

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

☔ View full report in Codecov by Sentry.
📢 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.