f74ad86748
When creating presets in some panels, names like "Default" can be used which are the same preset names as bundled presets. New entries created like this can't be deleted because blender will treat it as a bundled preset which then leaves stale entries in the list. This fix prevents those kind of preset names to be used during creation. Pull Request: https://projects.blender.org/blender/blender/pulls/142652