[ML] Explain Log Rate Spikes: Adds secondary sort by doc_count only if sorted by p-value

[walterra]

Summary

Part of #156011.

Adds a secondary sort by doc_count only if the results table is sorted by p-value. This is useful in cases when there are lots of items with the same p-value. The combination of high significance (low p-value) and sorted by doc_count ascending will surface the most unique field/value combinations.

Before:

After:

Checklist

• Unit or functional tests were updated or added to match the most common scenarios
• This was checked for breaking API changes and was labeled appropriately

[elasticmachine]

Pinging @elastic/ml-ui (:ml)

[peteharverson]

Tested and LGTM

[alvarezmelissa87]

LGTM ⚡

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 3b5ae2d

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
aiops	804.9KB	805.2KB	+310.0B

Unknown metric groups

ESLint disabled line counts

id	before	after	diff
enterpriseSearch	13	15	+2
securitySolution	410	414	+4
total			+6

Total ESLint disabled count

id	before	after	diff
enterpriseSearch	14	16	+2
securitySolution	493	497	+4
total			+6

History

• 💔 Build #134777 failed 05c880f

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

cc @walterra