pointDescriptionEnabledThreshold property
When a series contains more points than this, we no longer expose information about individual points to screen readers. Note that the keyboard navigation remains functional, but points won't have accessible descriptions unless handled separately.
Set to false
to disable.
API Docs: https://api.highcharts.com/highcharts/accessibility.series.pointDescriptionEnabledThreshold
Implementation
double? pointDescriptionEnabledThreshold;