exclude file count on channel stats api call on from channel header (#22624)

webapp/platform/client/src/client4.ts

@@ -1782,9 +1782,10 @@ export default class Client4 {
         );
     };
 
-    getChannelStats = (channelId: string) => {
+    getChannelStats = (channelId: string, excludeFilesCount = false) => {
+        const param = excludeFilesCount ? `?exclude_files_count=${excludeFilesCount}` : '';
         return this.doFetch<ChannelStats>(
-            `${this.getChannelRoute(channelId)}/stats`,
+            `${this.getChannelRoute(channelId)}/stats${param}`,
             {method: 'get'},
         );
     };