Fix topic selector in IConsumerServiceSelector (#806)

Co-authored-by: Andrii Labyntsev <lab.andrii@gmail.com>

src/DotNetCore.CAP/Internal/IConsumerServiceSelector.Default.cs

@@ -59,11 +59,6 @@ namespace DotNetCore.CAP.Internal
                 return null;
             }
 
-            if (!string.IsNullOrEmpty(_capOptions.TopicNamePrefix))
-            {
-                key = $"{_capOptions.TopicNamePrefix}.{key}";
-            }
-
             var result = MatchUsingName(key, executeDescriptor);
             if (result != null)
             {

test/DotNetCore.CAP.Test/CustomConsumerSubscribeTest.cs

@@ -45,7 +45,7 @@ namespace DotNetCore.CAP.Test
         {
             var selector = _provider.GetRequiredService<IConsumerServiceSelector>();
             var candidates = selector.SelectCandidates();
-            var bestCandidates = selector.SelectBestCandidate("Candidates.Foo", candidates);
+            var bestCandidates = selector.SelectBestCandidate($"{TopicNamePrefix}.Candidates.Foo", candidates);
 
             Assert.NotNull(bestCandidates);
             Assert.NotNull(bestCandidates.MethodInfo);