remove firstRender logic from Command.Empty, fixes #149

cmdk/src/index.tsx

@@ -877,14 +877,9 @@ const Dialog = React.forwardRef<HTMLDivElement, DialogProps>((props, forwardedRe
  * Automatically renders when there are no results for the search query.
  */
 const Empty = React.forwardRef<HTMLDivElement, EmptyProps>((props, forwardedRef) => {
-  const isFirstRender = React.useRef(true)
   const render = useCmdk((state) => state.filtered.count === 0)
 
-  React.useEffect(() => {
-    isFirstRender.current = false
-  }, [])
-
-  if (isFirstRender.current || !render) return null
+  if (!render) return null
   return <Primitive.div ref={forwardedRef} {...props} cmdk-empty="" role="presentation" />
 })