MM-22706: pass along set_online flag in websocket response (#14591)

* MM-22706: pass along set_online flag in websocket response

To let the client know whether a user has created a post without
being online or not, we get the set_online query param and
pass it down to the websocket event being passed down to the client.

With this PR, the "data" field of the `posted` event will contain
a `set_online` boolean field set to true/false depending on the
query_param set_online value set in the createPost call.

* Setting to false for auto responder

Co-authored-by: mattermod <mattermod@users.noreply.github.com>

app/export_test.go

@@ -388,14 +388,14 @@ func TestExportDMandGMPost(t *testing.T) {
 		Message:   "aa" + model.NewId() + "a",
 		UserId:    th1.BasicUser.Id,
 	}
-	th1.App.CreatePost(p1, dmChannel, false)
+	th1.App.CreatePost(p1, dmChannel, false, true)
 
 	p2 := &model.Post{
 		ChannelId: dmChannel.Id,
 		Message:   "bb" + model.NewId() + "a",
 		UserId:    th1.BasicUser.Id,
 	}
-	th1.App.CreatePost(p2, dmChannel, false)
+	th1.App.CreatePost(p2, dmChannel, false, true)
 
 	// GM posts
 	p3 := &model.Post{
@@ -403,14 +403,14 @@ func TestExportDMandGMPost(t *testing.T) {
 		Message:   "cc" + model.NewId() + "a",
 		UserId:    th1.BasicUser.Id,
 	}
-	th1.App.CreatePost(p3, gmChannel, false)
+	th1.App.CreatePost(p3, gmChannel, false, true)
 
 	p4 := &model.Post{
 		ChannelId: gmChannel.Id,
 		Message:   "dd" + model.NewId() + "a",
 		UserId:    th1.BasicUser.Id,
 	}
-	th1.App.CreatePost(p4, gmChannel, false)
+	th1.App.CreatePost(p4, gmChannel, false, true)
 
 	posts, err := th1.App.Srv().Store.Post().GetDirectPostParentsForExportAfter(1000, "0000000")
 	require.Nil(t, err)
@@ -473,7 +473,7 @@ func TestExportPostWithProps(t *testing.T) {
 		},
 		UserId: th1.BasicUser.Id,
 	}
-	th1.App.CreatePost(p1, dmChannel, false)
+	th1.App.CreatePost(p1, dmChannel, false, true)
 
 	p2 := &model.Post{
 		ChannelId: gmChannel.Id,
@@ -483,7 +483,7 @@ func TestExportPostWithProps(t *testing.T) {
 		},
 		UserId: th1.BasicUser.Id,
 	}
-	th1.App.CreatePost(p2, gmChannel, false)
+	th1.App.CreatePost(p2, gmChannel, false, true)
 
 	posts, err := th1.App.Srv().Store.Post().GetDirectPostParentsForExportAfter(1000, "0000000")
 	require.Nil(t, err)