Mark category as read (#24003)

* Mark category as read

* Fix lint and test

* Fix tests

* Fix test and remove wrong aria

* Address server issues and add mark as read for unreads

* Missing changes

* Fix tests

* fix tests

* Add confirmation popup to mark as read category

* Always use viewMultipleChannels and other fixes

* Remove unneeded code

* Fix test

* Address feedback

* Address feedback

* Fix tests

* Fix test

* Fix tests

* Update aria-haspopup depending on the number of channels to mark as viewed

---------

Co-authored-by: Mattermost Build <build@mattermost.com>

server/channels/api4/channel_test.go

@@ -2478,9 +2478,10 @@ func TestViewChannel(t *testing.T) {
 	CheckBadRequestStatus(t, resp)
 
 	view.ChannelId = "correctlysizedjunkdddfdfdf"
-	_, resp, err = client.ViewChannel(context.Background(), th.BasicUser.Id, view)
-	require.Error(t, err)
-	CheckBadRequestStatus(t, resp)
+	viewResult, _, err := client.ViewChannel(context.Background(), th.BasicUser.Id, view)
+	require.NoError(t, err)
+	require.Len(t, viewResult.LastViewedAtTimes, 0)
+
 	view.ChannelId = th.BasicChannel.Id
 
 	member, _, err := client.GetChannelMember(context.Background(), th.BasicChannel.Id, th.BasicUser.Id, "")