fixes ringing (#94853)

## About The Pull Request

Before
<img width="480" height="29" alt="image"
src="https://github.com/user-attachments/assets/dd352495-c566-481f-aee0-aa8618df7e7e"
/>

After
<img width="496" height="43" alt="image"
src="https://github.com/user-attachments/assets/a0edd64f-50ae-4b7a-8932-292acdd558df"
/>

## Why It's Good For The Game

*ring

code/modules/modular_computers/computers/item/computer_power.dm

@@ -9,7 +9,7 @@
 
 	if(!internal_cell)
 		return FALSE
-	if(internal_cell.use(amount))
+	if(!amount || internal_cell.use(amount))
 		return TRUE
 	if(!check_programs)
 		return FALSE