Fix input mode in status bar for block selection.

Author: jonathanslenders

ptpython/layout.py

@@ -429,7 +429,7 @@ def toggle_vi_mode(mouse_event: MouseEvent) -> None:
             elif app.current_buffer.selection_state.type == SelectionType.CHARACTERS:
                 append((input_mode_t, "Vi (VISUAL)", toggle_vi_mode))
                 append((token, " "))
-            elif app.current_buffer.selection_state.type == "BLOCK":
+            elif app.current_buffer.selection_state.type == SelectionType.BLOCK:
                 append((input_mode_t, "Vi (VISUAL BLOCK)", toggle_vi_mode))
                 append((token, " "))
         elif mode in (InputMode.INSERT, "vi-insert-multiple"):