fix: reset sub-page state on BUTTON_B press

- Added logic to reset `current_sub_page` to 0 when BUTTON_B is pressed to ensure correct pagination behavior.

badger_os/examples/actions.py

@@ -179,6 +179,7 @@ def update_repo(increment):
         update_page(-1)
         changed = True
     if badger.pressed(badger2040.BUTTON_B):
+        state["current_sub_page"] = 0
         changed = True
     if badger.pressed(badger2040.BUTTON_C):
         update_page(1)