Fix bola slowing when held (#94335)

## About The Pull Request

We just deleted the code that read `SLOWS_WHILE_IN_HAND`

## Changelog

🆑 Melbert
fix: Bolas don't slow while in hand
/🆑

code/modules/mob/inventory.dm

@@ -475,8 +475,10 @@
 
 ///Get all items in our possession that should affect our movespeed
 /mob/proc/get_equipped_speed_mod_items()
-	return get_equipped_items(INCLUDE_HELD|INCLUDE_ABSTRACT|INCLUDE_PROSTHETICS)
-
+	. = get_equipped_items(INCLUDE_ABSTRACT|INCLUDE_PROSTHETICS)
+	for(var/obj/item/thing in held_items)
+		if(thing.item_flags & SLOWS_WHILE_IN_HAND)
+			. += thing
 /**
  * Returns the items that were successfully unequipped.
  */