Use TileShape enum more universally

src/components/views/rooms/ReplyPreview.js

@@ -1,5 +1,5 @@
 /*
-Copyright 2017 New Vector Ltd
+Copyright 2017 - 2021 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
@@ -24,6 +24,7 @@ import PropTypes from "prop-types";
 import { RoomPermalinkCreator } from "../../../utils/permalinks/Permalinks";
 import { UIFeature } from "../../../settings/UIFeature";
 import { replaceableComponent } from "../../../utils/replaceableComponent";
+import { TileShape } from "./EventTile";
 
 function cancelQuoting() {
     dis.dispatch({
@@ -90,7 +91,7 @@ export default class ReplyPreview extends React.Component {
                 <div className="mx_ReplyPreview_clear" />
                 <EventTile
                     alwaysShowTimestamps={true}
-                    tileShape="reply_preview"
+                    tileShape={TileShape.ReplyPreview}
                     mxEvent={this.state.event}
                     permalinkCreator={this.props.permalinkCreator}
                     isTwelveHour={SettingsStore.getValue("showTwelveHourTimestamps")}