Check to force tools to initialize the ctx id to zero. (#1135)

* Check to force tool to initialize the ctx id to zero.

* initialize rocprofiler_context_id_t with 0 in units tests

* changelog

---------

Co-authored-by: Gopesh Bhardwaj <gopesh.bhardwaj@amd.com>

samples/code_object_tracing/client.cpp

@@ -79,7 +79,7 @@ using kernel_symbol_map_t  = std::unordered_map<rocprofiler_kernel_id_t, kernel_
 
 rocprofiler_client_id_t*      client_id        = nullptr;
 rocprofiler_client_finalize_t client_fini_func = nullptr;
-rocprofiler_context_id_t      client_ctx       = {};
+rocprofiler_context_id_t      client_ctx       = {0};
 kernel_symbol_map_t*          client_kernels   = nullptr;
 
 std::string