Guard CustomOption scrollIntoView against null ref (#2832)

When a Select closes while a useEffect scroll-to-selected-option is
pending (e.g. concurrent rendering or rapid open/close), React sets
ref.current to null during Option unmount before the effect fires.
The `props.isSelected && ref.current.scrollIntoView()` call then throws
TypeError: Cannot read properties of null (reading 'scrollIntoView').

Using optional chaining (ref.current?.scrollIntoView()) makes the call
a no-op when the component has already unmounted.

Fixes neetozone/neeto-cal-web#23714

Co-authored-by: Neeto Dev Bot <agent@neeto-dev-bot.neetozone.com>
Co-authored-by: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: 3 people

src/components/Select.jsx

@@ -87,7 +87,7 @@ const CustomOption = props => {
   } = props;
 
   useEffect(() => {
-    props.isSelected && ref.current.scrollIntoView();
+    props.isSelected && ref.current?.scrollIntoView();
   }, [props.isSelected]);
 
   const optionComponent = (