[Serverless Search] Add consistent toast messages for all APIs

[sphilipse]

Summary

This adds default error toast messages to all API calls in the Serverless Elasticsearch plugin, and provides some ways to skip or modify the toasts.

[sphilipse]

@elasticmachine merge upstream

[efegurkan]

Nice

[sphilipse]

@elasticmachine merge upstream

[sphilipse]

@elasticmachine merge upstream

[sphilipse]

@elasticmachine merge upstream

[kibana-ci]

💛 Build succeeded, but was flaky

• Buildkite Build
• Commit: fbba202

Failed CI Steps

• FTR Configs #23

Test Failures

• [job] [logs] FTR Configs #23 / cases security and spaces enabled: trial push_case memoryless server user profile uid falls back to authc to get the user information when the profile uid is not available

Metrics [docs]

Module Count

Fewer modules leads to a faster build time

id	before	after	diff
serverlessSearch	336	335	-1

Async chunks

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

id	before	after	diff
serverlessSearch	425.5KB	424.3KB	-1.2KB

Page load bundle

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

id	before	after	diff
serverlessSearch	55.6KB	56.2KB	+568.0B

History

• 💔 Build #185764 failed 629dea0
• 💔 Build #185759 failed bb20d97
• 💚 Build #185279 succeeded e078e12
• 💛 Build #185068 was flaky f187286

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream