[7.x] [CTI] updates Alert Summary UI (#107081)

[kibanamachine]

Backports the following commits to 7.x:

• [CTI] updates Alert Summary UI ([CTI] updates Alert Summary UI #107081)

[kibanamachine]

💛 Build succeeded, but was flaky

• continuous-integration/kibana-ci/pull-request

• Commit: b3774e8

• Storybooks Preview

• Flaky suites:

  • xpack-securitySolutionCypressChrome

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Test Failures

Kibana Pipeline / general / Deletes one rule from detail page.Custom detection rules deletion and edition Deletion Deletes one rule from detail page

Link to Jenkins

Stack Trace

Failed Tests Reporter:
  - Test has not failed recently on tracked branches

AssertionError: Timed out retrying after 60000ms: expected '<button.euiContextMenuItem>' to be 'visible'

This element `<button.euiContextMenuItem>` is not visible because its parent `<div.euiPanel.euiPanel--borderRadiusMedium.euiPanel--plain.euiPanel--noShadow.euiPopover__panel.euiPopover__panel--left>` has CSS property: `opacity: 0`
    at Context.eval (http://localhost:6121/__cypress/tests?p=cypress/integration/detection_rules/custom_query_rule.spec.ts:22380:43)

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Metrics [docs]

Async chunks

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

id	before	after	diff
securitySolution	6.4MB	6.4MB	+1.7KB

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

cc @ecezalp