Kibana version: main

Describe the bug:

While I was working on adding a point visibility option to the Appearance configuration for Lens Line/Area chart for (#222187) I noticed that in Legacy viz Line/Area chart when the Show dots toggle is off, then the point visibility is set to auto as shown in the below gif.

This was introduced in this PR #197828 to enhance point visibility for Lens Line/Area charts.

Currently in src/platform/plugins/shared/chart_expressions/expression_xy/public/helpers/data_layers.tsx:
visible: pointVisibility ?? (showPoints || markSizeAccessor ? 'always' : 'auto')

Expected behavior: Now that the Point visibility option has been added for Lens charts, should we change the point visibility for Legacy charts to never instead of auto when toggle is off (pointVisibility is undefined and showPoints is false)?

Screenshots (if relevant):