fix(node): errno property when command missing (#22691)

Fixes https://github.com/denoland/deno/issues/22604

`remix dev` with Node adapter works:
```
$ ~/gh/littledivy/deno/target/debug/deno task dev
Task dev remix dev --manual

 💿  remix dev

 info  building...
 info  built (619ms)
[remix-serve] http://localhost:3000 (http://192.168.1.24:3000)

GET / 200 - - 3.090 ms
```

1 files changed, 12 insertions, 0 deletions

diff --git a/tests/unit_node/child_process_test.ts b/tests/unit_node/child_process_test.ts
index 9c6fed9e4..85bb6d3b0 100644
--- a/tests/unit_node/child_process_test.ts
+++ b/tests/unit_node/child_process_test.ts
@@ -771,3 +771,15 @@ Deno.test(async function execFileWithUndefinedTimeout() {
   );
   await promise;
 });
+
+Deno.test(async function spawnCommandNotFoundErrno() {
+  const { promise, resolve } = Promise.withResolvers<void>();
+  const cp = CP.spawn("no-such-command");
+  cp.on("error", (err) => {
+    const errno = Deno.build.os === "windows" ? -4058 : -2;
+    // @ts-ignore: errno missing from typings
+    assertEquals(err.errno, errno);
+    resolve();
+  });
+  await promise;
+});