fix: Replace bare except and reorganize imports in io.py

aider/io.py

@@ -20,7 +20,7 @@ def restore_multiline(func):
         self.multiline_mode = False
         try:
             return func(self, *args, **kwargs)
-        except:
+        except Exception:
             raise
         finally:
             self.multiline_mode = orig_multiline
@@ -48,7 +48,6 @@ from rich.style import Style as RichStyle
 from rich.text import Text
 
 from aider.mdstream import MarkdownStream
-
 from .dump import dump  # noqa: F401
 from .utils import is_image_file