"page_down and page_up" overrides not only kitty behavior, but also programs opened inside kitty

**Describe the bug**
map page_down scroll_page_down works correctly for kitty, but it also overrides pagination of vim. Which doesn't happen in other terms like foot.

**To Reproduce**
Steps to reproduce the behavior:
1.  kitty conf → map page_down scroll_page_down
2. run vim → try to paginate
3. Pagination keys won't work
