Update WebView.android.tsx

Remove checking of startUrl === curentUrl

src/WebView.android.tsx

     if (onLoadEnd) {
       onLoadEnd(event);
     }
-    if (url === this.startUrl) {
-      this.setState({
-        viewState: 'IDLE',
-      });
-    }
+    this.setState({
+      viewState: 'IDLE',
+    });
     this.updateNavigationState(event);
   };