fix the type on the messagesView(the view of files)

app/views/MessagesView/getFileUrlAndTypeFromMessage.ts

@@ -1,12 +1,12 @@
 export default function (message: { type: string; url: string }) {
 	if (/image/.test(message.type)) {
-		return { image_url: message.url };
+		return { image_url: message.url, image_type: message.type };
 	}
 	if (/audio/.test(message.type)) {
-		return { audio_url: message.url };
+		return { audio_url: message.url, audio_type: message.type };
 	}
 	if (/video/.test(message.type)) {
-		return { video_url: message.url };
+		return { video_url: message.url, video_type: message.type };
 	}
 	return {
 		title_link: message.url,

app/views/MessagesView/index.tsx

@@ -10,7 +10,7 @@ import Message from '../../containers/message';
 import ActivityIndicator from '../../containers/ActivityIndicator';
 import I18n from '../../i18n';
 import StatusBar from '../../containers/StatusBar';
-import getFileUrlFromMessage from './getFileUrlFromMessage';
+import getFileUrlAndTypeFromMessage from './getFileUrlAndTypeFromMessage';
 import { themes } from '../../lib/constants';
 import { TSupportedThemes, withTheme } from '../../theme';
 import { getUserSelector } from '../../selectors/login';
@@ -203,7 +203,7 @@ class MessagesView extends React.Component<IMessagesViewProps, IMessagesViewStat
 								{
 									title: item.name,
 									description: item.description,
-									...getFileUrlFromMessage(item)
+									...getFileUrlAndTypeFromMessage(item)
 								}
 							]
 						}}