[MM-53195] services/telemetry: regen client config right after assigning diagnostic ID to platform (#23773)

server/channels/app/platform/service.go

@@ -381,6 +381,13 @@ func (ps *PlatformService) ShutdownConfig() error {
 
 func (ps *PlatformService) SetTelemetryId(id string) {
 	ps.telemetryId = id
+
+	ps.PostTelemetryIdHook()
+}
+
+// PostTelemetryIdHook triggers necessary events to propagate telemtery ID
+func (ps *PlatformService) PostTelemetryIdHook() {
+	ps.regenerateClientConfig()
 }
 
 func (ps *PlatformService) SetLogger(logger *mlog.Logger) {