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/computers/item/computer_ui.dm

@@ -16,12 +16,6 @@
 	if(!user.can_read(src, READING_CHECK_LITERACY))
 		return
 
-	if(ishuman(user) && !allow_chunky)
-		var/mob/living/carbon/human/human_user = user
-		if(human_user.check_chunky_fingers())
-			balloon_alert(human_user, "fingers are too big!")
-			return
-
 	// Robots don't really need to see the screen, their wireless connection works as long as computer is on.
 	if(!screen_on && !issilicon(user))
 		if(ui)
@@ -103,6 +97,12 @@
 	if(.)
 		return
 
+	if(ishuman(usr) && !allow_chunky) //in /datum/computer_file/program/ui_act() too
+		var/mob/living/carbon/human/human_user = usr
+		if(human_user.check_chunky_fingers())
+			balloon_alert(human_user, "fingers are too big!")
+			return TRUE
+
 	switch(action)
 		if("PC_exit")
 			kill_program()