Don't allow [kill] animate=yes to scroll to units through fog and shroud

Restores 1.12's behaviour.

(cherry-picked from commit 4e37cdc)

changelog.md

@@ -225,6 +225,8 @@
    * Fixed many crashes and out-of-sync errors when using the planning mode.
    * Fixed an occasional crash at the loading screen related to multi-thread
      access of the image cache.
+   * [kill] animate=yes no longer scrolls to units through fog or shroud, thus
+     matching 1.12's behavior again.
 
 ## Version 1.13.12
  ### Security fixes

data/lua/wml/kill.lua

@@ -42,7 +42,7 @@ function wesnoth.wml_actions.kill(cfg)
 			wesnoth.fire_event("last breath", death_loc, killer_loc)
 		end
 		if cfg.animate and unit.valid == "map" then
-			wesnoth.scroll_to_tile(death_loc)
+			wesnoth.scroll_to_tile(death_loc, true)
 			local anim = wesnoth.create_animator()
 			local primary = wml.get_child(cfg, "primary_attack")
 			local secondary = wml.get_child(cfg, "secondary_attack")