This adds a new overlay for curves sculpt mode that displays the curves that the user currently edits. Those may be different from the evaluated/original curves when procedural deformations or child curves are used. The overlay can clash with the evaluated curves when they are exactly on top of each other. There is not much we can do about that currently. The user will have to decide whether the overlay should be shown or not on a case-by-case basis. Pull Request #104467