Retry application upgrade > Success message (Add toast success message)

What does this MR do?

When a user retries a Runner application upgrade and it succeeds, the user will see a banner alert.

This MR replaces the current banner alert with a toast message.

Closes #57017 (closed)

Dependent on gitlab-ui!235 (merged)

Note: In order to test this MR the yarn install command needs to be executed in the project.

Preview

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To simulate an "Upgrade failure" state (to show the Retry update button), the following commands can be executed:

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Open rails console: bundle exec rails console

In rails console execute the following:

1. cluster = Clusters::Cluster.find <id> Note: <id> can be found in the browser url when navigating to the cluster
2. runner = cluster.application_runner
3. runner.update!(status: 6)

To simulate an "Upgrade succeeded" state (to show the toast message):

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Click the Retry update button and wait for a successful upgrade.

Does this MR meet the acceptance criteria?

Conformity

• Changelog entry
• Code review guidelines
• Merge request performance guidelines
• Style guides

Performance and testing

• Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• Tested in all supported browsers