Add diagnostics for DisableLegacyMFA (#10566)

app/diagnostics.go

@@ -289,6 +289,7 @@ func (a *App) trackConfig() {
 		"allow_cookies_for_subdomains":                            *cfg.ServiceSettings.AllowCookiesForSubdomains,
 		"enable_api_team_deletion":                                *cfg.ServiceSettings.EnableAPITeamDeletion,
 		"experimental_enable_hardened_mode":                       *cfg.ServiceSettings.ExperimentalEnableHardenedMode,
+		"disable_legacy_mfa":                                      *cfg.ServiceSettings.DisableLegacyMFA,
 		"experimental_strict_csrf_enforcement":                    *cfg.ServiceSettings.ExperimentalStrictCSRFEnforcement,
 		"enable_email_invitations":                                *cfg.ServiceSettings.EnableEmailInvitations,
 		"experimental_channel_organization":                       *cfg.ServiceSettings.ExperimentalChannelOrganization,