[Logs UI] Add callout for legacy log views

[weltenwort]

⚠️ This PR contains commits from #207753 to enable testing. It needs to be rebase onto main before merging.

📝 Summary

This adds a call-out to the deprecated logs stream component with information on how to migrate. That includes a link to the Kibana deprecations in the upgrade assistant.

• 🏁 closes https://github.com/elastic/logs-dev/issues/186

🎨 Previews

🕵️‍♀️ Review notes

Since the log settings page doesn't exist anymore in main, import the following ndjson file using the saved object UI to create a legacy log view:

{"attributes":{"description":"A default log view","logColumns":[{"timestampColumn":{"id":"5e7f964a-be8a-40d8-88d2-fbcfbdca0e2f"}},{"fieldColumn":{"field":"event.dataset","id":" eb9777a8-fcd3-420e-ba7d-172fff6da7a2"}},{"messageColumn":{"id":"b645d6da-824b-4723-9a2a-e8cece1645c0"}}],"logIndices":{"indexName":"remote_cluster:logs-*","type":"index_name"},"name":"Legacy Log View"},"coreMigrationVersion":"8.17.0","created_at":"2023-01-18T14:18:03.797Z","id":"log-view","references":[],"type":"infrastructure-monitoring-log-view","updated_at":"2023-01-18T14:18:03.797Z","version":"WzQ4NywxXQ=="}
{"excludedObjects":[],"excludedObjectsCount":0,"exportedCount":1,"missingRefCount":0,"missingReferences":[]}

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[elasticmachine]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: 6872fe4

Failed CI Steps

• Jest Tests #6

Test Failures

• [job] [logs] Jest Tests #6 / useGetCaseUserActionsStats shows a toast error when the API returns an error

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
logsShared	358	361	+3

Async chunks

Total size of all lazy-loaded chunks that will be downloaded as the user navigates the app

id	before	after	diff
logsShared	286.4KB	286.4KB	+51.0B

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
logsShared	151.0KB	162.9KB	+12.0KB

History

• 💔 Build #270149 failed 7fabdda

cc @weltenwort