build: use //third_party/simdutf by default in GN

PR-URL: #58115
Reviewed-By: Cheng Zhao <zcbenz@gmail.com>
Reviewed-By: Yagiz Nizipli <yagiz@nizipli.com>
Reviewed-By: Chengzhong Wu <legendecas@gmail.com>

Author: codebytere

node.gni

@@ -14,7 +14,7 @@ declare_args() {
   node_openssl_path = "$node_path/deps/openssl"
 
   # The location of simdutf - use the one from node's deps by default.
-  node_simdutf_path = "$node_path/deps/simdutf"
+  node_simdutf_path = "//third_party/simdutf"
 
   # The NODE_MODULE_VERSION defined in node_version.h.
   node_module_version = exec_script("$node_path/tools/getmoduleversion.py", [], "value")