Use Ref type to accept both types of ref

src/components/views/elements/StyledCheckbox.tsx

@@ -6,7 +6,7 @@ SPDX-License-Identifier: AGPL-3.0-only OR GPL-3.0-only
 Please see LICENSE files in the repository root for full details.
 */
 
-import React, { RefCallback } from "react";
+import React, { Ref } from "react";
 import { randomString } from "matrix-js-sdk/src/randomstring";
 import classnames from "classnames";
 
@@ -16,7 +16,7 @@ export enum CheckboxStyle {
 }
 
 interface IProps extends React.InputHTMLAttributes<HTMLInputElement> {
-    inputRef?: RefCallback<HTMLInputElement>;
+    inputRef?: Ref<HTMLInputElement>;
     kind?: CheckboxStyle;
     id?: string;
 }