Changes the missing food icon test to cover ALL /obj's (#71908)

Might as well cover everyyyyyyyyything. :)

Fixes https://github.com/tgstation/tgstation/issues/71953
Fixes https://github.com/tgstation/tgstation/issues/71983

🆑 ShizCalev
code: We now unit test all /obj's for missing icons. :)
/🆑


todo: Fix the fucked up icons.

Co-authored-by: MrMelbert <51863163+MrMelbert@users.noreply.github.com>

code/modules/mapfluff/ruins/spaceruin_code/originalcontent.dm

@@ -5,6 +5,7 @@
 
 /obj/item/paper/pamphlet/ruin/originalcontent
 	icon = 'icons/obj/fluff.dmi'
+	icon_state = "painting1"
 
 /obj/item/paper/pamphlet/ruin/originalcontent/stickman
 	name = "Painting - 'BANG'"
@@ -14,7 +15,6 @@
 /obj/item/paper/pamphlet/ruin/originalcontent/treeside
 	name = "Painting - 'Treeside'"
 	default_raw_text = "<i>This picture depicts a sunny day on a lush hillside, set under a shaded tree.</i>"
-	icon_state = "painting1"
 
 /obj/item/paper/pamphlet/ruin/originalcontent/pennywise
 	name = "Painting - 'Pennywise'"