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/counter_collection/client.cpp

@@ -63,7 +63,7 @@ namespace
 rocprofiler_context_id_t&
 get_client_ctx()
 {
-    static rocprofiler_context_id_t ctx;
+    static rocprofiler_context_id_t ctx{0};
     return ctx;
 }