fix(compass-global-writes): handle loading error COMPASS-8446

[paula-stacho]

Description

This one adds a LOADING_ERROR state. This state is reached whether the loading fails in the initial state (NOT_READY), or during polling (SHARDING). I have considered to simply show the toast during polling and continue with polling attempts. But seeing it in action, I think the toast isn't very clear when there was no user action, so I choose to handle both the same way (LOADING_ERROR and user has to reload). Let me know what you think about it, I'm on the edge about stopping the polling after it fails - it might be a temporary error after all.

Checklist

• New tests and/or benchmarks are included
• Documentation is changed or added
• I have signed the MongoDB Contributor License Agreement (https://www.mongodb.com/legal/contributor-agreement)

Motivation and Context

• Bugfix
• New feature
• Dependency update
• Misc

Open Questions

Dependents

Types of changes

• Backport Needed
• Patch (non-breaking change which fixes an issue)
• Minor (non-breaking change which adds functionality)
• Major (fix or feature that would cause existing functionality to change)