Don't delete spawners when changing max players amount, if such amount is greater than the spawners amount

DOCS.md

@@ -411,8 +411,9 @@ When a player is inside the editor, they have 2 string metadata containing the n
 If you want to use an arena_lib function inside the logic of the items of your section, you must pass an additional parameter at the end: `true`. This tells arena_lib that the action is run whilst being inside the editor - e.g. instead of `arena_lib.change_teams_amount(sender, mod, arena_name, amount)`, you shall use `arena_lib.change_teams_amount(sender, mod, arena_name, amount, true)`. If you don't, the function will most likely stop you from running it.  
 
 ### 1.12 Things you don't want to do with a light heart
-* Changing the number of teams, if `variable_teams_amount` is false: it'll delete your spawners (this has to be done in order to avoid further problems)
-* Any action in the "Players" section of the editor, except changing their minimum amount: it'll delete your spawners (same as above)
+* Changing the number of teams in your minigame registration, if `variable_teams_amount` is false: it'll delete your spawners (this has to be done in order to avoid further problems)
+* Changing the number of teams of an arena (it requires `variable_teams_amount`): it'll delete your spawners (same as above)
+* Changing the number of max players with something lesser than the spawners amount: it'll delete your spawners (same as above)
 * Removing properties in the minigame declaration: it'll delete them from every arena, without any possibility to get them back. Always do a backup first
 * Disabling timers (`time_mode = "decremental"` to something else) when arenas have custom timer values: it'll reset every custom value, so you have to put them again manually if/when you decide to turning timers back up  
 <br>  

src/api/core.lua

@@ -734,9 +734,25 @@ function arena_lib.change_players_amount(sender, mod, arena_name, min_players, m
     arena.max_players = old_max_players
     return end
 
-  -- se lɜ giocatorɜ massimɜ sono cambiatɜ, svuoto i vecchi punti rinascita per evitare problemi
+  -- se lɜ giocatorɜ massimɜ sono cambiatɜ e ci sono più punti rinascita dellɜ giocatorɜ massimɜ, li svuoto
   if max_players and old_max_players ~= max_players then
-    arena_lib.set_spawner(sender, mod, arena_name, nil, "deleteall", in_editor)
+    local spawners_amount
+
+    if arena.teams_enabled then
+      -- se ci son le squadre, ottengo l'ammontare della squadra con più punti rinascita
+      for t_id, _ in pairs(arena.teams) do
+        local t_spawners_amount = arena_lib.get_arena_spawners_count(arena, t_id)
+        if not spawners_amount or spawners_amount < t_spawners_amount then
+          spawners_amount = t_spawners_amount
+        end
+      end
+    else
+      spawners_amount = arena_lib.get_arena_spawners_count(arena)
+    end
+
+    if max_players < spawners_amount then
+      arena_lib.set_spawner(sender, mod, arena_name, nil, "deleteall", in_editor)
+    end
   end
 
   -- aggiorno l'entrata, se esiste