[FEATURE]: Enable dashed legend markers for shape traces #7701
Description
Description
Enable dashed legend markers for shape traces.
Why should this feature be added?
This will complete the feature that was originally added in #7673.
Notes
- This was carved out of Add support for dashed marker lines in scatter plots #7673 because it's technically a breaking change
- Check that PR to see where changes will need to be made to enable this feature