Add training WASM generation to Web CI pipeline (#17319)
### Description
[Successful pipeline
run](https://dev.azure.com/onnxruntime/onnxruntime/_build/results?buildId=1123141&view=results)
Added flag to build the training artifacts & updated the
pull-wasm-artifacts script to pull the training artifacts as well.
Bundled into this PR are minor formatting fixes + naming fixes.
### Motivation and Context
[This PR](https://github.com/microsoft/onnxruntime/pull/16521) extended
the WASM API wrapper to build training WASM artifacts as well.
The ORT training WASM artifacts are required to support ORT training web
bindings.
