Aquariums are now potential fishing spots. (#88243)

## About The Pull Request
You can now fish from aquariums if you wish to. This includes some
backend changes to make it possible for the fish table from
get_fish_table() to contain instances, and all that it entails up to
spawn_reward(), which is a requirement for the gimmick to respect the
various traits and other variables of the already instantiated fish
rather than read from cached properties.

## Why It's Good For The Game
The fish progress score/index had only little nasty flaw that has been
nagging me since day one: Not all fish species can be caught. Skipping
McGill, which is a peculiar case that for cheevo purposes should be
considered a standard goldfish, there is the one, unsignificant yet rare
purple sludgefish which can only be gotten as a rare evolution of the
generic sludgefish. Talk about petty, but this may be a long-term nit I
prefer to handle right now.

Also why not? The 'unmarine mastodon' is near impossible to get unless
you somehow find a oil well which is locked behind a specific ruin.

## Changelog

🆑
fix: Aquariums are now potential fishing spots.
/🆑

code/datums/components/_component.dm

@@ -470,13 +470,13 @@
 	for(var/component_key in dc)
 		var/component_or_list = dc[component_key]
 		if(islist(component_or_list))
-			for(var/datum/component/I in component_or_list)
-				if(I.can_transfer)
-					target.TakeComponent(I)
+			for(var/datum/component/component in component_or_list)
+				if(component.can_transfer)
+					target.TakeComponent(component)
 		else
-			var/datum/component/C = component_or_list
-			if(C.can_transfer)
-				target.TakeComponent(C)
+			var/datum/component/component = component_or_list
+			if(!QDELETED(component) && component.can_transfer)
+				target.TakeComponent(component)
 
 /**
  * Return the object that is the host of any UI's that this component has