assets entry for the build-angular does not support yarn pnp package paths?

### Command

build

### Is this a regression?

- [ ] Yes, this behavior used to work in the previous version

### The previous version in which this bug was not present was

_No response_

### Description

It does not appear to be possible to include assets and paths from a yarn pnp package.

It seems that build-angular builder supports pnp package resolution for styles, but not assets.

I would expect the assets path (dictionary specification option) to work to copy paths from pacakges in the pnp environment.

### Minimal Reproduction

% ng new test-yarn-example --style scss --no-routing
% cd test-yarn-example
% yarn add ng2-pdfjs-viewer

Next, add the path to the angular.json.

Just adding the string will result in the error saying it must be in the project source root.

Adding the dictionary version, yields no error but does not copy the assets either.

```
{
"glob": "**/*",
"input": "node_modules/ng2-pdfjs-viewer/pdfjs",
"output": "/assets/pdfjs"
}
```
% yarn build

### Exception or Error

```text
Unable to copy assets: The ng2-pdfjs-viewer/node_modules/pdfjs asset path must start with the project source root.
```

### Your Environment

```text
Angular CLI: 16.0.2
Node: 18.15.0
Package Manager: yarn 3.5.0
OS: darwin arm64

Angular: 16.0.2
... animations, cli, common, compiler, compiler-cli, core, forms
... platform-browser, platform-browser-dynamic, router

Package Version
---------------------------------------------------------
@angular-devkit/architect 0.1600.2 (cli-only)
@angular-devkit/build-angular 16.0.2
@angular-devkit/core 16.0.2 (cli-only)
@angular-devkit/schematics 16.0.2 (cli-only)
@schematics/angular 16.0.2 (cli-only)
rxjs 7.8.1
typescript 5.0.4
```

### Anything else relevant?

_No response_

まず、提供されている ng new、yarn add、angular.json の assets エントリ、yarn build の手順で問題を再現し、続いて build-angular のアセット処理とパッケージパスの解決を追跡します。Yarn Plug'n'Play パッケージの assets 辞書パスが受け付けられ、project source-root エラーなしで設定された出力先にコピーされれば完了です。

索引モデルが issue の本文から書いたものです。