chore: Add debug Console.WriteLine for FDv1Fallback configuration

Author: keelerm84

pkgs/sdk/server/contract-tests/SdkClientEntity.cs

@@ -509,8 +509,10 @@ private static Configuration BuildSdkConfig(SdkConfigParams sdkParams, ILogAdapt
                 // Configure the FDv1 Fallback Synchronizer directly from dataSystem.fdv1Fallback,
                 // separate from the FDv2 Primary/Fallback synchronizer chain. This is engaged only
                 // in response to a server-directed FDv1 Fallback Directive.
+                Console.WriteLine($"DEBUG: tag={tag} FDv1Fallback null? {sdkParams.DataSystem.FDv1Fallback == null}");
                 if (sdkParams.DataSystem.FDv1Fallback != null)
                 {
+                    Console.WriteLine($"DEBUG: tag={tag} FDv1Fallback.BaseUri={sdkParams.DataSystem.FDv1Fallback.BaseUri}");
                     if (sdkParams.DataSystem.FDv1Fallback.BaseUri != null)
                     {
                         endpoints.Polling(sdkParams.DataSystem.FDv1Fallback.BaseUri);
@@ -524,6 +526,7 @@ private static Configuration BuildSdkConfig(SdkConfigParams sdkParams, ILogAdapt
                     }
 
                     dataSystemBuilder.FDv1FallbackSynchronizer(fdv1FallbackBuilder);
+                    Console.WriteLine($"DEBUG: tag={tag} dataSystemBuilder.FDv1FallbackSynchronizer set to {fdv1FallbackBuilder}");
                 }
 
                 builder.DataSystem(dataSystemBuilder);