Dropdown - add missing typescript definition for filterClearIcon pt (#7878)

Author: dodvarko

components/lib/dropdown/dropdown.d.ts

@@ -76,6 +76,10 @@ export interface DropdownPassThroughOptions {
      * Uses to pass attributes to the filter icon's DOM element.
      */
     filterIcon?: DropdownPassThroughType<React.SVGProps<SVGSVGElement> | React.HTMLAttributes<HTMLSpanElement>>;
+    /**
+     * Uses to pass attributes to the filter clear icon's DOM element.
+     */
+    filterClearIcon?: DropdownPassThroughType<React.SVGProps<SVGSVGElement> | React.HTMLAttributes<HTMLSpanElement>>;
     /**
      * Uses to pass attributes to the wrapper's DOM element.
      */