fix: restore the ability to have empty move detail

Author: anthonyronda

src/module/actor/entity.js

@@ -26,8 +26,10 @@ export default class OseActor extends Actor {
       source.prototypeToken.texture.img = "icons/svg/mystery-man.svg";
     }
     // Fixing missing movement.value by moving it to details.movement
-    if (source?.system?.movement?.value && !source?.system?.details.movement)
+    if (source?.system?.movement?.value && !source?.system?.details.movement){
       source.system.details.movement = source.system.movement.value;
+      delete source.system.movement.value;
+    }
 
     return source;
   }