test: close sort menu after verifying

Signed-off-by: mertmit <mertmit99@gmail.com>

tests/playwright/pages/Dashboard/Grid/Column/index.ts

@@ -386,5 +386,8 @@ export class ColumnPageObject extends BasePage {
       )
       .first()
       .isVisible();
+    
+    // close sort menu
+    await this.grid.toolbar.clickSort();
   }
 }