Wasmer-python doesn't support multiple wasi versions.

[abc767234318]

Describe the bug

The B2-1.wasm runs well, when i use the command "wasmer run B2-1.wasm --allow-multiple-wasi-versions". However, the wasmer-python seems not to support multiple wasi versions, and it has the following errors:

RuntimeError: Error while importing "wasi_unstable"."fd_write": unknown import. Expected Function(FunctionType { params: [I32, I32, I32, I32], results: [I32] })

If applicable, add a link to a test case (as a zip file or link to a repository we can clone). B2-1.zip