fix: dataGet helper and has method in collection

The 'has' method in the Collection class now uses 'has' instead of 'in'. The handling of 'target' inside the 'helpers' file has been revised to now specifically deal with a 'Collection' instance. These changes enhance consistency, readability, and code structure.

src/collection.ts

@@ -344,7 +344,7 @@ export class Collection<K extends CollectionKeyType = string, V = unknown> imple
   }
 
   public has(key: K) {
-    return key in this.items;
+    return this.items.has(key);
   }
 
   /**

src/helpers.ts

@@ -104,8 +104,11 @@ export function dataGet(
     if (isAccessible(target) && exists(target, segment)) {
       if (Array.isArray(target)) {
         target = target[Number.parseInt(segment, 10)];
+      } else if (target instanceof Collection) {
+        target = target.get(segment);
+      } else {
+        target = (target as Record<any, any>)[segment];
       }
-      target = (target as Record<any, any>)[segment];
     } else {
       return value(fallback);
     }