flag/option ordering matters in the new CLI

```
@brendandburns ➜ /workspaces/dev-wasm-go (main) $ WASMTIME_NEW_CLI=1 wasmtime main.wasm --dir=.::.
Hello Go World!
Error writing open test.txt: errno 76
@brendandburns ➜ /workspaces/dev-wasm-go (main) $ WASMTIME_NEW_CLI=0 wasmtime main.wasm --dir=.
Hello Go World!
Wrote file
Copied file
```

Note that with the old CLI the wasm program works, with the new CLI it doesn't. I'm not sure if this is on purpose, but if it is what is the correct new syntax?

### Test Case

WASM file uploaded. If you want to rebuild see:
https://github.com/dev-wasm/dev-wasm-go?tab=readme-ov-file#simple-example

### Versions and Environment

Wasmtime version or commit: 15.0.1

Operating system: Linux

Architecture: amd64

[main.zip](https://github.com/bytecodealliance/wasmtime/files/13688245/main.zip)