[MM-53026] - Disabled insights by default (#23702)

* Insights disabled by default

* fixed tests

* fixed tests

---------

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

server/channels/app/reaction_test.go

@@ -92,6 +92,7 @@ func TestGetTopReactionsForTeamSince(t *testing.T) {
 
 	th.Server.platform.SetConfigReadOnlyFF(false)
 	defer th.Server.platform.SetConfigReadOnlyFF(true)
+	th.App.UpdateConfig(func(cfg *model.Config) { cfg.FeatureFlags.InsightsEnabled = true })
 
 	userId := th.BasicUser.Id
 	user2Id := th.BasicUser2.Id
@@ -263,6 +264,7 @@ func TestGetTopReactionsForUserSince(t *testing.T) {
 
 	th.Server.platform.SetConfigReadOnlyFF(false)
 	defer th.Server.platform.SetConfigReadOnlyFF(true)
+	th.App.UpdateConfig(func(cfg *model.Config) { cfg.FeatureFlags.InsightsEnabled = true })
 
 	userId := th.BasicUser.Id