bug(cdk/dialog): parent injector not working correctly

### Is this a regression?

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

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

18

### Description

Tokens from the parent injector are not available.
The behaviour is different between a ngComponentOutlet and the injector added to dialog

### Reproduction

StackBlitz link: https://stackblitz.com/edit/stackblitz-starters-epebydgb
Steps to reproduce:
1.
2.

### Expected Behavior

Tokens from the parent injector are available

### Actual Behavior

Tokens from parent injector are not available

### Environment

```
_ _ ____ _ ___
/ \ _ __ __ _ _ _| | __ _ _ __ / ___| | |_ _|
/ △ \ | '_ \ / _` | | | | |/ _` | '__| | | | | | |
/ ___ \| | | | (_| | |_| | | (_| | | | |___| |___ | |
/_/ \_\_| |_|\__, |\__,_|_|\__,_|_| \____|_____|___|
|___/

Angular CLI: 19.0.0
Node: 18.20.3
Package Manager: npm 10.2.3
OS: linux x64

Angular: 19.0.0
... animations, build, cli, common, compiler, compiler-cli, core
... forms, platform-browser, router

Package Version
------------------------------------------------------
@angular-devkit/architect 0.1900.0
@angular-devkit/core 19.0.0
@angular-devkit/schematics 19.0.0
@angular/cdk 19.0.5
@schematics/angular 19.0.0
rxjs 7.8.1
typescript 5.6.3
zone.js 0.15.0
```

Commencez par la reproduction StackBlitz liée et comparez le comportement du parent injector de ngComponentOutlet avec l'injector ajouté à cdk/dialog. Suivez les points d'entrée pertinents du dialogue et de l'injector présentés dans la reproduction. Le travail est terminé lorsque les tokens du parent injector sont disponibles via le dialogue comme prévu.

Rédigé par le modèle d'indexation à partir du texte de l'issue.