#3033: Line chart has 'Marker size' option, but it cannot be changed

[katerina-stepanova]

• [ ] Make it work same way as in the scatterplot - if value = null (make the field nullable) - allow the autoLayout to calculate the marker size, if not - use the user-defined value

v1.20.2

Steps to reproduce:

1. Open a table
2. Add line chart
3. Change marker size: from the context menu or from the properties panel

Expected results: all options present in menu (context menu or properties panel) should work as expected. If an option is not supported for this type of viewer, it should be removed. Actual results: Marker size option is present, but adjusting it won't change the actual size of markers.

[dnillovna]

This issue has been mirrored in Jira: https://reddata.atlassian.net/browse/GROK-16647