Ability to StackOnlyArea and be able to overly other line values

[Corey-J]

Summary

Introduce a new property to either chart, or onto each series that allows multiple of the same chart type to stack (In this case, area). While allowing other chart types to remain independent.

API Changes

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Intended Use Case

My intended use case is i have a multi y-axis chart, that has 2 area series and 5 line series (One of the line charts is on the separate axis). The area charts are required to stack on each other, but the data for each of the line series must remain independent. The request is similar to the 'stackonlybar' option that exists, more info here (#4132)

[johnwheal]

I have the same requirement and was previously able to implement this but fix #4132 has broken my code

[github-actions]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.