Remove libheif optional dependency from glycin-gtk4

pkg.info

@@ -1,7 +1,7 @@
 name: glycin
 description: Load, edit, and create images as well as read metadata
 version: 2.0.4
-revision: 1
+revision: 2
 url: https://gnome.pages.gitlab.gnome.org/glycin/
 license: MPL2 OR LGPL2.1-or-later
 architecture: any
@@ -17,8 +17,6 @@ depends:
   - libjxl
   - librsvg
   - libseccomp
-optional_depends:
-  - libheif
 make_depends:
   - clang
   - gobject-introspection
@@ -38,6 +36,8 @@ downloads:
     checksum: c38147200f5804a257341678e8bce314bcff79a76f986a8c3279d9d848f8bff7
 split_packages:
   - name: glycin
+    optional_depends:
+      - libheif
   - name: glycin-gtk4
     description: GTK4 integration for glycin
     depends: