Feature Request: Add "Refresh App Store" button to manually sync community stores

[samyrwendel]

Problem
Currently, when using a custom community app store, there's no way to manually refresh/sync the store contents. If a community store releases an update, users must:
Remove the community store URL from settings
Re-add the same URL again
This is inconvenient and not intuitive for users.
Proposed Solution
Add a "Refresh" or "Sync" button in the App Store settings (where community stores are listed) that allows users to manually trigger a sync of the store catalog without having to remove and re-add the URL.
Use Case
Community app store maintainers frequently update their apps (new versions, new apps, updated descriptions/screenshots). Users should be able to easily pull these updates without the current workaround.
Additional Context
This would also help during development/testing of community stores, where maintainers need to frequently check if their changes are being picked up correctly.

[Mr-DS-ML-85]

Also Check this #2090