Ensure the logs are mixed for HA instances

[hardillb]

Description

Ensure that HA logs get combined properly now we have paging enabled.

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

[knolleary]

The /flowforge/logs endpoint in the launcher still returns the plain array.

The PR I did adds a new endpoint /flowforge/logs/entries which does the proper pagination. But that's as far as that work got; still need to do the work to plumb that through the drivers. So as it stands, I don't think this PR is needed (yet).

[hardillb]

OK, I'll flip it back to draft for now and we can tweak it for the new endpoint when needed.