Update src/typingsInstaller/nodeTypingsInstaller.ts

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

Author: KushalMeghani1644

src/typingsInstaller/nodeTypingsInstaller.ts

@@ -695,7 +695,7 @@ class NodeTypingsInstaller extends ts.server.typingsInstaller.TypingsInstaller {
                     const timeoutId = nodeSetTimeout(() => {
                         resolve();
                     }, backoffDelay);
-                    timeoutId.unref?.();
+                    timeoutId.unref();
                 });
 
                 if (this.log.isEnabled()) {