feat: Add mode property to forkApplicationSaga

This commit adds the `mode` property to the `forkApplicationSaga` function in the `ApplicationSagas.tsx` file. The `mode` property is set to `APP_MODE.EDIT`. This change allows for better control and customization of the application editing mode.

app/client/src/ce/sagas/ApplicationSagas.tsx

@@ -688,6 +688,7 @@ export function* forkApplicationSaga(
           payload: {
             applicationId: application.id,
             pageId: defaultPage?.id,
+            mode: APP_MODE.EDIT,
           },
         });
       }