Merges copy_to() into trans_to() for reagent holder (#92410)

## About The Pull Request
Merges `/datum/reagents/proc/copy_to()` ->
`/datum/reagents/proc/trans_to()`. Added a parameter `copy_only` to
indicate we want a copy operation

## Why It's Good For The Game
- Less code to maintain
- All the functionality of `trans_to()`[logging, transferring single
reagent, expelling reagents from stomach, etc] now applies for copying
reagents as well which was missing a lot of it, so we have consistent
behaviour

## Changelog
🆑
refactor: code for copying reagents has been refactored. Please report
bugs on github
/🆑

code/modules/reagents/reagent_containers/cups/glassbottle.dm

@@ -918,7 +918,7 @@
 	if(!bottle)
 		return ..()
 	icon_state = bottle.icon_state
-	bottle.reagents.copy_to(src, 100)
+	bottle.reagents.trans_to(src, 100, copy_only = TRUE)
 	if(istype(bottle, /obj/item/reagent_containers/cup/glass/bottle/juice))
 		desc += " You're not sure if making this out of a carton was the brightest idea."
 		isGlass = FALSE

code/modules/reagents/reagent_containers/hypospray.dm

@@ -55,7 +55,7 @@
 				trans = reagents.trans_to(affected_mob, amount_per_transfer_from_this, transferred_by = user, methods = INJECT)
 			else
 				reagents.expose(affected_mob, INJECT, fraction)
-				trans = reagents.copy_to(affected_mob, amount_per_transfer_from_this, copy_methods = INJECT)
+				trans = reagents.trans_to(affected_mob, amount_per_transfer_from_this, methods = INJECT, copy_only = TRUE)
 			to_chat(user, span_notice("[trans] unit\s injected. [reagents.total_volume] unit\s remaining in [src]."))
 			log_combat(user, affected_mob, "injected", src, "([contained])")
 		return TRUE