removed hard coded shader start up

tests/RenderCadenceCompositorHttpControlServerTests.cpp

@@ -165,7 +165,7 @@ void TestKnownPostEndpointReturnsActionError()
 	HttpControlServer::HttpRequest request;
 	request.method = "POST";
 	request.path = "/api/layers/add";
-	request.body = "{\"shaderId\":\"happy-accident\"}";
+	request.body = "{\"shaderId\":\"solid\"}";
 
 	RenderCadenceHttpRouteCallbacks callbacks;
 	const HttpControlServer::HttpResponse response = RouteRenderCadenceHttpRequest(request, server, callbacks);