UI refinements for radio buttons and the Snapping/Grid popovers

editor/src/messages/layout/utility_types/widgets/input_widgets.rs

@@ -264,6 +264,9 @@ pub struct RadioInput {
 	// This uses `u32` instead of `usize` since it will be serialized as a normal JS number (replace this with `usize` after switching to a Rust-based GUI)
 	#[serde(rename = "selectedIndex")]
 	pub selected_index: Option<u32>,
+
+	#[serde(rename = "minWidth")]
+	pub min_width: u32,
 }
 
 #[derive(Clone, Default, Derivative, Serialize, Deserialize, WidgetBuilder, specta::Type)]