Deno's fs.openSync fails with O_RDONLY | O_CREAT

The following program works find under node and bun:

```
import { openSync, closeSync, constants } from "node:fs";

// Create or open a file for writing, creates if it doesn't exist
const fd = openSync("./log.txt", constants.O_WRONLY | constants.O_CREAT);
// ... operations
closeSync(fd);
```

But not under deno:

```
$ ~/.deno/bin/deno -A test.mjs
error: Uncaught (in promise) TypeError: creating or truncating a file requires write or append access
const fd = openSync("missing.txt", constants.O_RDONLY | constants.O_CREAT);
^
at openSync (ext:deno_node/_fs/_fs_open.ts:43:12)
at file:///usr/local/google/home/sbc/dev/wasm/emscripten/test.mjs:3:12
```

The C equivalent also seem to work fine, so I think maybe deno is wrong here?

```
#include
#include
#include

int main() {
int fd = open("missing.txt", O_RDONLY|O_CREAT, 0x777);
printf("%d\n", fd);
return 0;
}
```