[Security solution] Grouping package cleanup

[stephmilovic]

Summary

An enhancement, a bug fix, and tests for the grouping package

Enhancement: Count aggregation

• Creates a pattern to take optional count aggregations for groupCount0 and unitCount0.
• Updates the security solution implementation to use new count fields instead of groupsNumber and alertsCount
• Updates grouping.tsx to show the optional counts at the appropriate time
• Updates the default unit translation from alerts to events

Bug fix: reset pagination

• Resets the pagination to activePage: 0 on initial load
• Updates the pagination object returned from useGrouping to include a reset function that the consumer can call to set activePage: 0
• Updates the security solution implementation to call pagination.reset() when the global filters update. Fixes this bug:

bug.mov

Tests

• reducer.test.ts
• use_grouping.test.tsx
• use_get_group_selector.test.tsx

To do in follow up

• Documentation
• Rename package? @YulNaumenko can't remember where we landed on this? This is what our imports currently look like:

   import type {
     GroupingFieldTotalAggregation,
     GroupingAggregation,
     RawBucket,
   } from '@kbn/securitysolution-grouping';
   import { isNoneGroup, useGrouping } from '@kbn/securitysolution-grouping';
  

[elasticmachine]

Pinging @elastic/security-threat-hunting (Team:Threat Hunting)

[elasticmachine]

Pinging @elastic/security-solution (Team: SecuritySolution)

[YulNaumenko]

Awesome!

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 8183593

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
@kbn/securitysolution-grouping	16	17	+1

Async chunks

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

id	before	after	diff
securitySolution	15.7MB	15.7MB	+796.0B

Unknown metric groups

API count

id	before	after	diff
@kbn/securitysolution-grouping	17	18	+1

ESLint disabled line counts

id	before	after	diff
securitySolution	428	430	+2

Total ESLint disabled count

id	before	after	diff
securitySolution	505	507	+2

History

• 💔 Build #112500 failed 5aa970f
• 💔 Build #112423 failed 66924b5
• 💔 Build #112418 failed 8e68be3
• 💔 Build #112407 failed 368089f
• 💔 Build #112402 failed cb1bb3b

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