There are actually some pastries that are warmed by default, like another comment mentioned. The barista can even tell on the register as it will say warmed or recommend warm under the item. If the bag says warmed under the item, it should be warmed, whether it’s by default or not. The warming partner should always warm it if it says warmed but usually the register partner will clarify with the customer and can void the warmed option. You shouldn’t always have to clarify. For example, if someone asked for a bagel and didn’t say warmed, they would automatically toast it. Many customers don’t know everything we need to know (like if they want whip or not) and baristas should ask clarifying questions if they’re unsure.