Disable the second network commissioning endpoint for ESP32 all-clust…

…ers-app. (#15546)

We don't use that endpoint, and should not be enabling it.

examples/all-clusters-app/esp32/main/main.cpp

@@ -628,13 +628,18 @@ class AppCallbacks : public AppDelegate
 
 AppCallbacks sCallbacks;
 
+constexpr EndpointId kNetworkCommissioningEndpointSecondary = 0xFFFE;
+
 } // namespace
 
 static void InitServer(intptr_t context)
 {
     // Init ZCL Data Model and CHIP App Server
     chip::Server::GetInstance().Init(&sCallbacks);
 
+    // We only have network commissioning on endpoint 0.
+    emberAfEndpointEnableDisable(kNetworkCommissioningEndpointSecondary, false);
+
     // Initialize device attestation config
     SetDeviceAttestationCredentialsProvider(Examples::GetExampleDACProvider());
     NetWorkCommissioningInstInit();