[Backport 7.x] Allow the client name to be a symbol (#1257)

Co-authored-by: Tomas Della Vedova <delvedor@users.noreply.github.com>

index.d.ts

@@ -88,7 +88,7 @@ interface ClientOptions {
   headers?: Record<string, any>;
   opaqueIdPrefix?: string;
   generateRequestId?: generateRequestIdFn;
-  name?: string;
+  name?: string | symbol;
   auth?: BasicAuth | ApiKeyAuth;
   cloud?: {
     id: string;