Closes #20814 by showing error alert if there's some error after OS native File -> Open https://github.com/user-attachments/assets/ce092831-4b55-4e20-8ffa-8e60eaf6364d The implementation here is the same as in handle_external_paths_drop function (when users uses drag and drop to open the file): https://github.com/zed-industries/zed/blob/de08e47e5bc94afdee81fd99f838100fc577a98c/crates/workspace/src/pane.rs#L2810 Release Notes: - Added an error alert when there's an error opening file with native OS picker.