Fix issue in GenerateIntegrationDefinitions.cs

Before: If an integration specified TargetMethodArgumentsToLoad as an empty array, it would be converted to null in InstrumentationDefinitions.Generated.cs and the automatic instrumentation would pass all parameters to the integration method.

After: If an integration specified TargetMethodArgumentsToLoad as an empty array, it is preserved as an emptry array in InstrumentationDefinitions.Generated.cs and the automatic instrumentation will pass no method arguments (so only the object instance) to the integration method.

Note: This may not need to be backported because no integrations in the 1.x branch actually set TargetMethodArgumentsToLoad to an empty array

Author: zacharycmontoya

tracer/build/_build/PrepareRelease/GenerateIntegrationDefinitions.cs

@@ -92,7 +92,7 @@ from assemblyNames in GetPropertyValue<string[]>(attribute, "AssemblyNames")
                                              TargetAssembly = assemblyNames,
                                              TargetType = GetPropertyValue<string>(attribute, "TypeName"),
                                              TargetMethod = GetPropertyValue<string>(attribute, "MethodName"),
-                                             TargetMethodArgumentsToLoad = (GetPropertyValue<ushort[]>(attribute, "TargetMethodArgumentsToLoad") ?? Enumerable.Empty<ushort>()).ToArray(),
+                                             TargetMethodArgumentsToLoad = GetPropertyValue<ushort[]>(attribute, "TargetMethodArgumentsToLoad"),
                                              TargetSignatureTypes = new string[] { GetPropertyValue<string>(attribute, "ReturnTypeName") }
                                                                    .Concat(GetPropertyValue<string[]>(attribute, "ParameterTypeNames") ?? Enumerable.Empty<string>())
                                                                    .ToArray(),
@@ -149,7 +149,7 @@ static void WriteCallTargetDefinitionFile(StreamWriter swriter, IEnumerable<Call
 
                     swriter.Write(" }, ");
 
-                    if (integration.TargetMethodArgumentsToLoad.Length > 0)
+                    if (integration.TargetMethodArgumentsToLoad is not null)
                     {
                         swriter.Write($" new ushort[] {{ ");
                         for (var s = 0; s < integration.TargetMethodArgumentsToLoad.Length; s++)