fix: CSidebar: emit onShowChange only on close

Author: woothu

src/CSidebar.js

@@ -58,7 +58,6 @@ const CSidebar = props=>{
 
   useEffect(() => {
     isOpen === true ? createBackdrop() : removeBackdrop()
-    onShowChange && onShowChange(isOpen)
     return () => removeBackdrop()
   }, [isOpen])
 
@@ -93,7 +92,10 @@ const CSidebar = props=>{
     }
   }
 
-  const closeSidebar = () => setIsOpen(overlaid ? false : 'responsive')
+  const closeSidebar = () => {
+    onShowChange && onShowChange(overlaid ? false : 'responsive')
+    setIsOpen(overlaid ? false : 'responsive')
+  }
 
   const isOnMobile = ()=>{
     return Boolean(getComputedStyle(node.current).getPropertyValue('--is-mobile'))