Change design of confirmation modals in web UI (#30884)

Co-authored-by: Renaud Chaput <renchap@gmail.com>

app/javascript/mastodon/features/ui/components/confirmation_modals/reply.tsx

@@ -0,0 +1,46 @@
+import { useCallback } from 'react';
+
+import { defineMessages, useIntl } from 'react-intl';
+
+import { replyCompose } from 'mastodon/actions/compose';
+import type { Status } from 'mastodon/models/status';
+import { useAppDispatch } from 'mastodon/store';
+
+import type { BaseConfirmationModalProps } from './confirmation_modal';
+import { ConfirmationModal } from './confirmation_modal';
+
+const messages = defineMessages({
+  replyTitle: {
+    id: 'confirmations.reply.title',
+    defaultMessage: 'Overwrite post?',
+  },
+  replyConfirm: { id: 'confirmations.reply.confirm', defaultMessage: 'Reply' },
+  replyMessage: {
+    id: 'confirmations.reply.message',
+    defaultMessage:
+      'Replying now will overwrite the message you are currently composing. Are you sure you want to proceed?',
+  },
+});
+
+export const ConfirmReplyModal: React.FC<
+  {
+    status: Status;
+  } & BaseConfirmationModalProps
+> = ({ status, onClose }) => {
+  const intl = useIntl();
+  const dispatch = useAppDispatch();
+
+  const onConfirm = useCallback(() => {
+    dispatch(replyCompose(status));
+  }, [dispatch, status]);
+
+  return (
+    <ConfirmationModal
+      title={intl.formatMessage(messages.replyTitle)}
+      message={intl.formatMessage(messages.replyMessage)}
+      confirm={intl.formatMessage(messages.replyConfirm)}
+      onConfirm={onConfirm}
+      onClose={onClose}
+    />
+  );
+};