[ML] Increase Test Coverage 8.16.0

[peteharverson]

Follow up to #182235

Meta issue to summarize improvements to test coverage for 8.16.0.

Jest unit tests

• [ML] AIOps: Update fields filter popover to be able to filter fields from analysis (not just grouping)  #188913 (WR)
• [ML] AIOps: Chunk groups of field candidates into single queries for top items and histograms. #189155 (WR)
• [ML] AIOps: Tweak function API for fetchTopCategories/fetchTopTerms #189863 (WR)
• [ML] Anomaly Detection: Adds popover links menu to anomaly explorer charts. #186587 (WR)
• [ML] Redesigns start/update model deployment dialog to support adaptive resources #190243 (DA)
• [ML] Various fixes for possible prototype pollution vulnerabilities #194529 (JG)
• [ML] Daylight saving time calendar events #193605 (JG)
• [ML] Fix query for pattern analysis and change point analysis #194742 (JG)R)
• [ML] Update vCPUs ranges for start model deployment  #195617 (DA)

API integration tests

• POST /internal/file_upload/preview_tika_contents (JG) [ML] File upload: Adds support for PDF files #186956
• POST /internal/ml/_has_privileges (JG) [ML] API tests for ML's _has_privileges #197274
• POST /internal/ml/anomaly_detectors/:jobId/results/buckets (RJ) [ML] Get buckets and get overall buckets api integration tests #197226
• POST /internal/ml/anomaly_detectors/:jobId/results/overall_buckets (RJ) [ML] Get buckets and get overall buckets api integration tests #197226
• POST internal/ml/results/partition_fields_values (with 'by' field value) (RJ) [ML] Single Metric Viewer: Enable cross-filtering for 'by', 'over' and 'partition' field values #193255
• DELETE /internal/ml/anomaly_detectors/:jobId/_forecast/:forecastId (MA) [ML] Anomaly Detection: adds ability to delete forecasts from job #194896

Serverless tests

Functional tests

• Click action on anomaly markers in embeddables (MA) [ML] Single Metric Viewer embeddable in dashboards: add tests for anomaly action menu #187801
• Links to SMV from annotations and forecasts table (RJ) [ML] Fixes links to the Single Metric Viewer from the Annotations and Forecasts tables #192000
• Check for hidden top influencers for AD job with no influencers (RJ) [ML] Anomaly Explorer: Hide top influencers panel for jobs without influencers #192987
• Anomaly detection configurations page (MA) [ML] Anomaly Detection: Adds a page to list supplied job configurations #191564
• File upload of a file which does not generate an ingest pipeline (JG) [ML] Fix file upload with no ingest pipeline #193744
• File upload of a file which uses an ingest pipeline (JG) [ML] Fix file upload when pipeline is used #194273
• Trained models UI - correct VCU ranges for start model deployment (DA) [ML] Update vCPUs ranges for start model deployment  #195617
• Memory usage page (include check for memory usage chart) (RJ) [ML] Memory usage: Functional tests #197415

[elasticmachine]

Pinging @elastic/ml-ui (:ml)

[peteharverson]

Closing. All items planned for 8.16.0 have been completed.