(templates): Enable retry policy for server connection exception in b…

…it boilerplate project template #6492 (#6493)

src/Templates/Boilerplate/Bit.Boilerplate/src/Client/Boilerplate.Client.Core/Services/HttpMessageHandlers/RetryDelegatingHandler.cs

@@ -16,7 +16,7 @@ protected override async Task<HttpResponseMessage> SendAsync(HttpRequestMessage
             {
                 return await base.SendAsync(request, cancellationToken);
             }
-            catch (Exception exp) when (exp is not KnownException)
+            catch (Exception exp) when (exp is not KnownException || exp is ServerConnectionException)
             {
                 lastExp = exp;
                 await Task.Delay(delay, cancellationToken);