Set Password form - use front-end template for admin users
Not without hacking up some core files, unfortunately.

You can see the logic Craft 2 uses to determine which set password template to render for a given request here: https://github.com/craftcms/cms/blob/develop-v2/src/controllers/UsersController.php#L1702-L1720

Basically, if a user has "accessCp" permissions (which admins certainly do), then they're going to get the Control Panel set password template.