[MM-30851] Replace ExperimentalChannelSidebarOrganization with EnableLegacySidebar (#16529)

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

services/telemetry/telemetry.go

@@ -416,7 +416,6 @@ func (ts *TelemetryService) trackConfig() {
 		"experimental_strict_csrf_enforcement":                    *cfg.ServiceSettings.ExperimentalStrictCSRFEnforcement,
 		"enable_email_invitations":                                *cfg.ServiceSettings.EnableEmailInvitations,
 		"experimental_channel_organization":                       *cfg.ServiceSettings.ExperimentalChannelOrganization,
-		"experimental_channel_sidebar_organization":               *cfg.ServiceSettings.ExperimentalChannelSidebarOrganization,
 		"disable_bots_when_owner_is_deactivated":                  *cfg.ServiceSettings.DisableBotsWhenOwnerIsDeactivated,
 		"enable_bot_account_creation":                             *cfg.ServiceSettings.EnableBotAccountCreation,
 		"enable_svgs":                                             *cfg.ServiceSettings.EnableSVGs,
@@ -424,6 +423,7 @@ func (ts *TelemetryService) trackConfig() {
 		"enable_opentracing":                                      *cfg.ServiceSettings.EnableOpenTracing,
 		"enable_local_mode":                                       *cfg.ServiceSettings.EnableLocalMode,
 		"managed_resource_paths":                                  isDefault(*cfg.ServiceSettings.ManagedResourcePaths, ""),
+		"enable_legacy_sidebar":                                   *cfg.ServiceSettings.EnableLegacySidebar,
 	})
 
 	ts.sendTelemetry(TrackConfigTeam, map[string]interface{}{