Fix borg emag modules stuck in inventory/screen after losing emag status (#83734)

## About The Pull Request
Checks that held modules exist in new module list after rebuilding
modules before putting them back in held modules.
Fixes emag modules stuck in inventory/screen after losing emag status
Also fixes jank fail to install piercing hypospray upgrade
## Why It's Good For The Game
Fixes buges
## Changelog
🆑
fix: Borg emag module jank when no longer emagged
fix: Borg piercing hypospray fail message
/🆑

---------

Co-authored-by: LemonInTheDark <58055496+LemonInTheDark@users.noreply.github.com>

code/modules/mob/living/silicon/robot/robot_model.dm

@@ -82,6 +82,8 @@
 	for(var/module in get_usable_modules())
 		if(!(module in cyborg.held_items))
 			. += module
+	if(!cyborg.emagged)
+		. += emag_modules
 
 /obj/item/robot_model/proc/add_module(obj/item/added_module, nonstandard, requires_rebuild)
 	if(isstack(added_module))
@@ -121,16 +123,15 @@
 	var/active_module = cyborg.module_active
 	cyborg.drop_all_held_items()
 	modules = list()
-	for(var/obj/item/module in basic_modules)
+	for(var/obj/item/module as anything in basic_modules)
 		add_module(module, FALSE, FALSE)
 	if(cyborg.emagged)
-		for(var/obj/item/module in emag_modules)
+		for(var/obj/item/module as anything in emag_modules)
 			add_module(module, FALSE, FALSE)
-	for(var/obj/item/module in added_modules)
+	for(var/obj/item/module as anything in added_modules)
 		add_module(module, FALSE, FALSE)
-	for(var/module in held_modules)
-		if(module)
-			cyborg.equip_module_to_slot(module, held_modules.Find(module))
+	for(var/obj/item/module as anything in held_modules & modules)
+		cyborg.equip_module_to_slot(module, held_modules.Find(module))
 	if(active_module)
 		cyborg.select_module(held_modules.Find(active_module))
 	if(cyborg.hud_used)