src: elevate v8 namespaces for node_url.cc

Elevate namespace for repeated entities.

PR-URL: #24573
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>

src/node_url.cc

@@ -21,6 +21,7 @@ using v8::Integer;
using v8::Isolate;
using v8::Local;
using v8::MaybeLocal;
using v8::NewStringType;
using v8::Null;
using v8::Object;
using v8::String;
@@ -31,7 +32,7 @@ using v8::Value;
inline Local<String> Utf8String(Isolate* isolate, const std::string& str) {
  return String::NewFromUtf8(isolate,
                             str.data(),
                             v8::NewStringType::kNormal,
                             NewStringType::kNormal,
                             str.length()).ToLocalChecked();
}

@@ -2159,7 +2160,7 @@ static void Parse(Environment* env,
    argv[ERR_ARG_INPUT] =
      String::NewFromUtf8(env->isolate(),
                          input,
                          v8::NewStringType::kNormal).ToLocalChecked();
                          NewStringType::kNormal).ToLocalChecked();
    error_cb.As<Function>()->Call(context, recv, arraysize(argv), argv)
        .FromMaybe(Local<Value>());
  }
@@ -2209,7 +2210,7 @@ static void EncodeAuthSet(const FunctionCallbackInfo<Value>& args) {
  args.GetReturnValue().Set(
      String::NewFromUtf8(env->isolate(),
                          output.c_str(),
                          v8::NewStringType::kNormal).ToLocalChecked());
                          NewStringType::kNormal).ToLocalChecked());
}

static void ToUSVString(const FunctionCallbackInfo<Value>& args) {
@@ -2243,7 +2244,7 @@ static void ToUSVString(const FunctionCallbackInfo<Value>& args) {
  args.GetReturnValue().Set(
      String::NewFromTwoByte(env->isolate(),
                             *value,
                             v8::NewStringType::kNormal,
                             NewStringType::kNormal,
                             n).ToLocalChecked());
}

@@ -2264,7 +2265,7 @@ static void DomainToASCII(const FunctionCallbackInfo<Value>& args) {
  args.GetReturnValue().Set(
      String::NewFromUtf8(env->isolate(),
                          out.c_str(),
                          v8::NewStringType::kNormal).ToLocalChecked());
                          NewStringType::kNormal).ToLocalChecked());
}

static void DomainToUnicode(const FunctionCallbackInfo<Value>& args) {
@@ -2284,7 +2285,7 @@ static void DomainToUnicode(const FunctionCallbackInfo<Value>& args) {
  args.GetReturnValue().Set(
      String::NewFromUtf8(env->isolate(),
                          out.c_str(),
                          v8::NewStringType::kNormal).ToLocalChecked());
                          NewStringType::kNormal).ToLocalChecked());
}

std::string URL::ToFilePath() const {