lib: fix route map crash on prefix list removal

lib: fix route map crash on prefix list removal

Changes:
- Refactor list entry deletion to use a function that properly notifies
  route map on deletion (fixes a heap-use-after-free).
- Prefix list entry wild card sets `le` to maximum IP mask value and
  `any` is a boolean.
- Fix prefix list trie removal order (in `prefix_list_entry_update_start`).
- Let only the `any` callback change the value of field `any`.

Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>