Migrate VerificationCancelled to TypeScript

src/components/views/verification/VerificationCancelled.tsx

@@ -15,18 +15,17 @@ limitations under the License.
 */
 
 import React from 'react';
-import PropTypes from 'prop-types';
 import * as sdk from '../../../index';
 import { _t } from '../../../languageHandler';
 import { replaceableComponent } from "../../../utils/replaceableComponent";
 
-@replaceableComponent("views.verification.VerificationCancelled")
-export default class VerificationCancelled extends React.Component {
-    static propTypes = {
-        onDone: PropTypes.func.isRequired,
-    }
+interface IProps {
+    onDone: () => void;
+}
 
-    render() {
+@replaceableComponent("views.verification.VerificationCancelled")
+export default class VerificationCancelled extends React.Component<IProps> {
+    public render(): React.ReactNode {
         const DialogButtons = sdk.getComponent('views.elements.DialogButtons');
         return <div>
             <p>{_t(