Indented import statements cause parsing error

Hi, I'm on stylish-haskell 0.14.1.0 with the default configurations (no configuration files).

After going over some testing, it seems that indentation on the import statements is causing a parsing error in form of `error: parse error on input ...`, which should be reproducible on any modules with indented import statements.

The testing codes and logs are available [here](https://stackoverflow.com/questions/71963606/indented-import-statement-causes-parsing-error-in-stylish-haskell).