fix(dropdown): fix ref validation

Author: abelflopes

packages/components/base/src/dropdown/Dropdown.tsx

@@ -130,6 +130,13 @@ export const Dropdown = ({
     setInternalOpen(open);
   }, [open]);
 
+  useEffect(() => {
+    if (!internalOpen) return;
+    if (!anchorRef.current) {
+      throw new Error("Dropdown anchor ref not initialized");
+    }
+  }, [anchorRef, internalOpen]);
+
   return (
     internalOpen && (
       <PositionEngine

packages/components/base/src/dropdown/DropdownButton.tsx

@@ -68,12 +68,6 @@ export const DropdownButton: React.FC<Readonly<DropdownButtonProps>> = ({
     setInternalOpen(open);
   }, [open]);
 
-  useEffect(() => {
-    if (buttonRef.current) {
-      throw new Error("DropdownButton ref not initialized");
-    }
-  }, []);
-
   return (
     <>
       {button}