ColorPicker: fix OKHSL circle in HSV mode

[beicause]

Fixes #68286.
OKHSL and HSV are different things, they should be stored separately in different fields.

[Calinou]

Tested locally, it works as expected.

[beicause]

In addition to fixing the issue, I think it should be allowed to use other color wheels in okhsl mode, not just okhsl circle. If possible I would like to update this PR, or I will open a new PR after this merges.

[fire]

Please add the modes in a separate pr! 👍

[KoBeWi]

#99515 should make it easier to add new shapes.

[beicause]

Actually in my test, after this pr, we just need to remove the get_shape_override and _get_actual_shape in okhsl mode to let it work in other color wheels. IMO the shape override is unnecessary and this why I want to also do it in this pr.

Of course, the refactoring is great and necessary.