CI, BLD: Use `cibuildwheel` to build WASM NumPy wheels

[agriyakhetarpal]

Description

This PR intends to invoke pypa/cibuildwheel#1456 for building and testing the Pyodide builds for NumPy. cc @rgommers who recommended testing out on a fork of NumPy first, which I did, and I got it to pass.

Update: cibuildwheel version 2.19.1 is out with the required support for Pyodide.

Additional context

1. Pyodide builds in the cibuildwheel documentation: https://cibuildwheel.pypa.io/en/latest/setup/#pyodide-webassembly-builds-experimental