feat: update react-navigation docs

Author: 47PADO47

docs/docs/docs/guides/usage-with-react-navigation.mdx

@@ -326,6 +326,14 @@ It's working separately from `enableFreeze()` in `react-native-screens`. So sett
 
 Test ID for the tab item. This can be used to find the tab item in the native view hierarchy.
 
+#### `role` <Badge text="iOS 18+" type="info" />
+
+A value that defines the purpose of the tab. This can be used to pin and separate search tabs
+
+Available options:
+
+- `search` - The search role.
+
 ### Events
 
 The navigator can emit events on certain actions. Supported events are: