761f075f8d
In `execute_realize_grease_pencil_tasks` we create a new `GreasePencil` but don't copy the parameters of (one of) the source grease pencils. The fix adds `BKE_grease_pencil_copy_parameters` to copy the parameters of the last src grease pencil. Note: `BKE_grease_pencil_copy_parameters` copies the materials array. We might want to remove this and always do the copy of this using a separate function because some callers need their own way of copying them. Pull Request: https://projects.blender.org/blender/blender/pulls/129977