fix(yazi): can open non-assigned extensions again

needed to change a few lines to enable defaults again.

apps/yazi/default.nix

@@ -93,6 +93,12 @@ in {
         image_bound = [10000 10000];
       };
       opener = {
+        anki = [
+          {
+            run = "anki \"$@\"";
+            desc = "Open with Anki";
+          }
+        ];
         pdf = [
           {
             run = "zathura \"$@\"";
@@ -105,7 +111,11 @@ in {
         ];
       };
       open = {
-        rules = [
+        prepend_rules = [
+          {
+            name = "*.{apkg,colpkg}";
+            use = "anki";
+          }
           {
             mime = "application/pdf";
             use = "pdf";