[`unused_io_amount`]: Lint with `is_ok` and `is_err` Fixes #10132 changelog: Apply [`unused_io_amount`] lint to `is_ok` and `is_err` without checking read/write amount
[`unused_io_amount`]: Lint with `is_ok` and `is_err` Fixes #10132 changelog: Apply [`unused_io_amount`] lint to `is_ok` and `is_err` without checking read/write amount