List: don't set the pointer cursor for non-clickable items.

src/widgets/List.css

@@ -42,7 +42,6 @@
 
 .ListItem-Item:hover {
   background-color: rgba(0, 0, 0, 0.1);
-  cursor: pointer;
 }
 
 .ListItem-inset {

src/widgets/List.tsx

@@ -80,6 +80,7 @@ export const ListItem = React.memo((_props: any) => {
     primaryText,
     secondaryText,
     children,
+    style,
     ...props
   } = _props;
 
@@ -101,8 +102,11 @@ export const ListItem = React.memo((_props: any) => {
     );
   }
 
+  const pressedStyle = (_props.onClick) ? { cursor: 'pointer' } : undefined;
+
   return (
     <ListItemRaw
+      style={{ ...pressedStyle, ...style }}
       {...props}
     >
       {leftIconHolder}