Enable the remote instance immersive editor

[cstns]

Description

switches the remote instance open editor button to use the immersive editor

Related Issue(s)

closes #6651

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 (5075231) to head (efad175).

Additional details and impacted files

@@                               Coverage Diff                               @@
##           6650_remote-instanceimmersive-editor-ui-tweaks    #6661   +/-   ##
===============================================================================
  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)

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