fix: add missing fields in frontend config schema

[Junjiequan]

Description

added few missing schema fields for frontendConfig

Motivation

Background on use case, changes needed

Fixes:

Please provide a list of the fixes implemented in this PR

• Items added

Changes:

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• changes made

Tests included

• Included for each change/fix?
• Passing? (Merge will not be approved unless this is checked)

Documentation

• swagger documentation updated [required]
• official documentation updated [nice-to-have]

official documentation info

If you have updated the official documentation, please provide PR # and URL of the pages where the updates are included

Backend version

• Does it require a specific version of the backend
• which version of the backend is required:

Summary by Sourcery

Update the admin frontend configuration JSONForms schema to include additional configuration fields that were previously missing.

[sourcery-ai]

Hey - I've reviewed your changes and they look great!

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