Fix CORS handling

[hardillb]

fixes #241

Description

Since the editor was moved to the /device-editor path this removed the default CORS middleware from the httpNodeRoot so OPTIONS calls were not handled properly.

This adds the default handler to the httpNodeRoot path

Related Issue(s)

241

Checklist

• [x] 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

• [ ] Backport needed? -> add the backport label
• [ ] Includes a DB migration? -> add the area:migration label