In Windows, by default, Code -> Reformat Code is `CTRL+ALT+L` and "Show Reformat File Dialog" is `CTRL+ALT+SHIFT+L`.
The latter window has no "show this dialog in the future" checkbox.
I believe it used to live under Settings -> Editor -> General -> Formatting, but in 14.1.4, the only options there are "Show notification after reformat code action" and "Show notification after organize imports action".
How it used to be, apparently:
How can I re-enable the "show this dialog" option?
How can I change the default Reformat Code... settings (scope, in particular)?