Fix #2687 - add Setters to Permissions property to provide improved backward compatibility

Oqtane.Shared/Models/SiteTemplate.cs

@@ -33,6 +33,10 @@ namespace Oqtane.Models
             {
                 return JsonSerializer.Serialize(PermissionList);
             }
+            set
+            {
+                PermissionList = JsonSerializer.Deserialize<List<Permission>>(value);
+            }
         }
     }
 
@@ -51,6 +55,10 @@ namespace Oqtane.Models
             {
                 return JsonSerializer.Serialize(PermissionList);
             }
+            set
+            {
+                PermissionList = JsonSerializer.Deserialize<List<Permission>>(value);
+            }
         }
     }
 }