webpack config is not reloaded when edited during `aio app run`

## Expected

The webpack config is reloaded for building the action when edited during `aio app run`

## Actual

The webpack config is **not** reloaded for building the action when edited during `aio app run`

## Repro

1. Add a actions/webpack-config.js file, exporting a CommonJS module as a webpack config
2. Run DEBUG=@adobe/aio-lib-runtime:action-builder:debug aio app run
3. See the log of the web pack config being loaded
4. Wait until the 2 urls of your deployed application is logged
5. Edit actions/webpack-config.js with a new entry/delete an entry
6. See the log of the web pack config being loaded, it should be different