message: Honour user-selected background image from settings
  Fixes
  This is provided as an easter egg, but more importantly as an a11y workaround.
diff: /*
  -Copyright 2015, 2016 OpenMarket Ltd
  -Copyright 2017 Vector Creations Ltd
  -Copyright 2017, 2018, 2020 New Vector Ltd
  +Copyright 2015 - 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.
  @@ -70,6 +68,7 @@ import SpaceStore from "../../stores/SpaceStore";
  import classNames from 'classnames';
  import GroupFilterPanel from './GroupFilterPanel';
  import CustomRoomTagPanel from './CustomRoomTagPanel';
  +import { mediaFromMxc } from "../../customisations/Media";
  // We need to fetch each pinned message individually (if we don't already have it)
  // so each pinned message may trigger a request. Limit the number per room for sanity.
  @@ -223,9 +222,14 @@ class LoggedInView extends React.Component<IProps, IState> {
  }
  private refreshBackgroundImage = async (): Promise<void> => {
  - this.setState({
  - backgroundImage: OwnProfileStore.instance.getHttpAvatarUrl(),
  - });
  + let backgroundImage = SettingsStore.getValue("RoomList.backgroundImage");
  + if (backgroundImage) {
  + // convert to http before going much further
  + backgroundImage = mediaFromMxc(backgroundImage).srcHttp;
  + } else {
  + backgroundImage = OwnProfileStore.instance.getHttpAvatarUrl();
  + }
  + this.setState({ backgroundImage });
  };
  private onAction = (payload): void => {
  