Remove full page refresh when ignoring/resolving errors in Sentry

What does this MR do?

Refactors the way errors are ignored/resolved when using Error Tracking for Sentry. Before, it used to do a full page refresh, now it just removes the item from the list.

Note: Results (for now) are cached for 10 minutes, so we can't automagically remove the error from the list, which is why this was necessary.

To test:

1. In a project: Settings -> Operations.

2. Open up Error Tracking

API URL: https://sentry.gitlab.net/.
Auth Key: LMK if you need one or create one on sentry :)
Project: Tanuki Inc

3. Errors should show up in: Operations -> Error Tracking

Screenshots

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• Code review guidelines
• Merge request performance guidelines
• Style guides

#197122 (closed)