Using Jersey context rather then Helidon context. (helidon-io#3403)

* Using Jersey context rather then Helidon context.
* Removed old code, kept comment.

Signed-off-by: Tomas Langer <tomas.langer@oracle.com>

tracing/jersey/src/main/java/io/helidon/tracing/jersey/AbstractTracingFilter.java

@@ -93,6 +93,7 @@ public void filter(ContainerRequestContext requestContext) {
             context.register(spanScope);
             context.register(ClientTracingFilter.class, span.context());
             requestContext.setProperty(SPAN_PROPERTY, span);
+            requestContext.setProperty(SPAN_SCOPE_PROPERTY, spanScope);
 
             if (context.get(TracingContext.class).isEmpty()) {
                 context.register(TracingContext.create(tracer, requestContext.getHeaders()));
@@ -166,8 +167,12 @@ public void filter(ContainerRequestContext requestContext, ContainerResponseCont
         requestContext.setProperty(SPAN_FINISHED_PROPERTY, true);
         span.finish();
 
-        Context context = Contexts.context().orElseThrow(() -> new IllegalStateException("Context must be available in Jersey"));
-        context.get(Scope.class).ifPresent(Scope::close);
+        // using the helidon context is not supported here, as we may be executing in a completion stage returned
+        // from a third party component
+        Scope scope = (Scope) requestContext.getProperty(SPAN_SCOPE_PROPERTY);
+        if (scope != null) {
+            scope.close();
+        }
     }
 
     /**