fix: tabletoolbarsearch type for onchange (#15395)

There was obviously some confusion between functions and
the events themselves.

There are a lot of other event handlers that need to be
cleaned up, especially the ones defined like (evt: any) => void,
but this just addresses TableToolbarSearch.

Refs #14471.

Co-authored-by: Andrea N. Cardona <cardona.n.andrea@gmail.com>

packages/react/src/components/DataTable/TableToolbarSearch.tsx

@@ -8,6 +8,7 @@
 import cx from 'classnames';
 import PropTypes from 'prop-types';
 import React, {
+  ChangeEvent,
   useMemo,
   useRef,
   useState,
@@ -83,7 +84,7 @@ export interface TableToolbarSearchProps {
    * Provide an optional hook that is called each time the input is updated
    */
   onChange?: (
-    event: '' | Partial<React.ChangeEventHandler<HTMLInputElement>>,
+    event: '' | ChangeEvent<HTMLInputElement>,
     value?: string
   ) => void;