[ResponseOps][Alert Summaries] Add default summary message

[doakalexi]

Resolves #148537

Summary

Added the capability for rule types to provide a default message for summary actions. This default message gets pre-populated within the rule action form whenever a user adds an action to a rule.

Also added a default framework summary message.

Checklist

• Any text added follows EUI's writing guidelines, uses sentence case text and includes i18n support
• Unit or functional tests were updated or added to match the most common scenarios

To verify

• Create a rule and add an action and select notify on custom action intervals
• Verify that the default message is populated

The system has detected {{alerts.new.count}} new, {{alerts.ongoing.count}} ongoing, and {{alerts.recovered.count}} alerts.

[elasticmachine]

Pinging @elastic/response-ops (Team:ResponseOps)

[jbudz]

limits.yml

[ersin-erdal]

Looks good.
Added a couple of comments.

[ersin-erdal]

LGTM

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: bfa50c3

Metrics [docs]

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
triggersActionsUi	560	561	+1

Async chunks

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

id	before	after	diff
triggersActionsUi	749.6KB	749.9KB	+278.0B

Page load bundle

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

id	before	after	diff
triggersActionsUi	115.7KB	118.4KB	+2.7KB

Unknown metric groups

API count

id	before	after	diff
triggersActionsUi	589	590	+1

History

• 💚 Build #105170 succeeded d413e4d
• 💔 Build #105121 failed affdbbe
• 💚 Build #104234 succeeded 4cae5a3
• 💔 Build #104184 failed 3fbb160
• 💔 Build #103985 failed 5a5011f
• 💛 Build #103864 was flaky 161c4fa

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@elasticmachine merge upstream