fixes computers spamming fingers are too big warning. also fixes exploit when using programs w/ fingers that are too big. (#72698)

Fixes #72153

🆑 ShizCalev
fix: You'll no longer constantly be spammed with messages if your
fingers are too big to interact with a computer's keyboard.
fix: You can no longer interact with programs that were previously
opened on a computer if your fingers are too big to use the keyboard.
fix: You can now look at computer screens even if your fingers are too
big to use the keyboard.
/🆑

code/modules/modular_computers/file_system/program.dm

@@ -218,6 +218,12 @@
 	if(.)
 		return
 
+	if(ishuman(usr) && !computer.allow_chunky) //in /obj/item/modular_computer/ui_act() too
+		var/mob/living/carbon/human/human_user = usr
+		if(human_user.check_chunky_fingers())
+			computer.balloon_alert(human_user, "fingers are too big!")
+			return TRUE
+
 	if(computer)
 		switch(action)
 			if("PC_exit")