marimekko: cannot set custom color via datum

[Linschlager]

Describe/explain the bug
I want to use a Marimekko chart and configure custom colors using the { datum: someField } syntax. This works nicely in other charts, but for Marimekko this seems to not be behaving the same.

To Reproduce

https://codesandbox.io/p/sandbox/cntjxj

Expected behavior

Being able to configure the color per dimension by using the "datum" color variant

Desktop (please complete the following information):

• OS: Linux
• Browser Chromium
• Version 130

Additional information

I'm not very familiar with the codebase, but my initial investigation lead to hooks.ts:233 where getColor gets the dimensionDatum which is in the process of being constructed. This does not have access to properties that are defined on the original dimensions and that are not otherwise used like id and value.

Therefore, this also partially affects the custom color variant as it doesn't have access to all the input properties.