[cleaning-the-perseus-finddom] Remove cast

Author: SonicScrewdriver

packages/perseus/src/components/simple-keypad-input.tsx

@@ -13,6 +13,8 @@ import {KeypadInput, keypadElementPropType} from "@khanacademy/math-input";
 import PropTypes from "prop-types";
 import * as React from "react";
 
+import type {Focusable} from "../types";
+
 type SimpleKeypadInputProps = {
     keypadElement?: any;
     onFocus: () => void;
@@ -23,7 +25,7 @@ type SimpleKeypadInputProps = {
     style?: React.CSSProperties;
 };
 
-const SimpleKeypadInput = React.forwardRef<HTMLElement, SimpleKeypadInputProps>(
+const SimpleKeypadInput = React.forwardRef<Focusable, SimpleKeypadInputProps>(
     function SimpleKeypadInput(props, ref) {
         const keypadInputRef = React.useRef<any>(null);
         const context = React.useContext(KeypadContext);

packages/perseus/src/widgets/numeric-input/numeric-input.tsx

@@ -87,7 +87,7 @@ export const NumericInputComponent = forwardRef<Focusable, NumericInputProps>(
             return (
                 <div className={alignmentClass}>
                     <SimpleKeypadInput
-                        ref={inputRef as React.RefObject<HTMLInputElement>}
+                        ref={inputRef}
                         value={props.userInput.currentValue}
                         keypadElement={props.keypadElement}
                         onChange={handleChange}