`npm run dev` spews a bunch of errors the first time

On a fresh repo using this template, running `npm run dev` for the first time spews a whole bunch of errors.

```
[1] ERROR in ./src/index.js 1:0-51
[1] Module not found: Error: Can't resolve 'app_package' in 'C:\GitHub\Test\test_package\src'
[1] resolve 'app_package' in 'C:\GitHub\Test\test_package\src'
[1] Parsed request is a module
[1] using description file: C:\GitHub\Test\test_package\package.json (relative path: ./src)
[1] Field 'browser' doesn't contain a valid alias configuration
[1] resolve as module
[1] C:\GitHub\Test\test_package\src\node_modules doesn't exist or is not a directory
[1] looking for modules in C:\GitHub\Test\test_package\node_modules
[1] single file module
[1] using description file: C:\GitHub\Test\test_package\package.json (relative path: ./node_modules/app_package)
[1] no extension
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package is not a file
[1] .js
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package.js doesn't exist
[1] .json
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package.json doesn't exist
[1] .wasm
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package.wasm doesn't exist
[1] existing directory C:\GitHub\Test\test_package\node_modules\app_package
[1] using description file: C:\GitHub\Test\test_package\node_modules\app_package\package.json (relative path: .)
[1] using description file: C:\GitHub\Test\test_package\package.json (relative path: ./node_modules/app_package)
[1] no extension
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package is not a file
[1] .js
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package.js doesn't exist
[1] .json
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package.json doesn't exist
[1] .wasm
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package.wasm doesn't exist
[1] as directory
[1] existing directory C:\GitHub\Test\test_package\node_modules\app_package
[1] using description file: C:\GitHub\Test\test_package\node_modules\app_package\package.json (relative path: .)
[1] use ./lib/index.js from main in package.json
[1] using description file: C:\GitHub\Test\test_package\node_modules\app_package\package.json (relative path: ./lib/index.js)
[1] no extension
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package\lib\index.js doesn't exist
[1] .js
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package\lib\index.js.js doesn't exist
[1] .json
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package\lib\index.js.json doesn't exist
[1] .wasm
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package\lib\index.js.wasm doesn't exist
[1] as directory
[1] C:\GitHub\Test\test_package\node_modules\app_package\lib\index.js doesn't exist
[1] using path: C:\GitHub\Test\test_package\node_modules\app_package\index
[1] using description file: C:\GitHub\Test\test_package\node_modules\app_package\package.json (relative path: ./index)
[1] no extension
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package\index doesn't exist
[1] .js
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package\index.js doesn't exist
[1] .json
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package\index.json doesn't exist
[1] .wasm
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\test_package\node_modules\app_package\index.wasm doesn't exist
[1] looking for modules in C:\GitHub\Test\node_modules
[1] single file module
[1] using description file: C:\GitHub\Test\package.json (relative path: ./node_modules/app_package)
[1] no extension
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\node_modules\app_package doesn't exist
[1] .js
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\node_modules\app_package.js doesn't exist
[1] .json
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\node_modules\app_package.json doesn't exist
[1] .wasm
[1] Field 'browser' doesn't contain a valid alias configuration
[1] C:\GitHub\Test\node_modules\app_package.wasm doesn't exist
[1] C:\GitHub\Test\node_modules\app_package doesn't exist
[1] C:\GitHub\node_modules doesn't exist or is not a directory
[1] C:\node_modules doesn't exist or is not a directory
[1]
[1] webpack 5.72.0 compiled with 1 error in 749 ms
```

I believe this is because `concurrently` is being used and the second command depends on the first one, but they are running in parallel.

Run `npm run dev` from a fresh checkout and inspect the development scripts in `package.json`, along with the import in `src/index.js`. Confirm whether the concurrent commands start in an order that leaves `app_package` unavailable. Done means the first development run completes without the reported module-resolution error.

Written by the indexing model from the issue text.