### Command

test

### 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

When using `TestBed.overrideComponent` to stub a child component, the test code coverage is no longer accurate

### Minimal Reproduction

Generate a new app with latest CLI and add a component:

```
npx @angular/cli@20.0.0-next.6 new aot-coverage --defaults --no-routing
cd aot-coverage
ng g c user
```

Use app-user in app.html:
```html

Hello, aot-coverage

```

Edit angular.json to add "aot": true in the test section and run:
```
ng test --no-watch --code-coverage
```

Coverage is 100%
```
Statements : 100% ( 12/12 )
Branches : 100% ( 11/11 )
Functions : 100% ( 3/3 )
Lines : 100% ( 6/6 )
```

Now, in the app.spec.ts, add in `beforeEach`:

```ts
TestBed.overrideComponent(App, {
remove: {
imports: [User],
},
add: {
imports: [User],
}
});
```

(this happens with a proper stub of course but even removing the import and adding it back works to reproduce the issue)

Run the tests again:

```
ng test --no-watch --code-coverage
```

Coverage is now inaccurate because the template is not properly covered:
```
Statements : 58.33% ( 7/12 )
Branches : 90.9% ( 10/11 )
Functions : 66.66% ( 2/3 )
Lines : 66.66% ( 4/6 )
```

### Exception or Error

```text

```

### Your Environment

```text
Angular CLI: 20.0.0-next.6
Node: 22.14.0
Package Manager: npm 10.9.0
OS: darwin arm64

Angular: 20.0.0-next.7
... common, compiler, compiler-cli, core, forms
... platform-browser, router

Package Version
------------------------------------------------------
@angular-devkit/architect 0.2000.0-next.6
@angular-devkit/core 20.0.0-next.6
@angular-devkit/schematics 20.0.0-next.6
@angular/build 20.0.0-next.6
@angular/cli 20.0.0-next.6
@schematics/angular 20.0.0-next.6
rxjs 7.8.2
typescript 5.8.3
zone.js 0.15.0
```

### Anything else relevant?

_No response_

Reproduce the issue in the generated app using angular.json, app.spec.ts, TestBed.overrideComponent, and the provided ng test --no-watch --code-coverage commands. Compare coverage before and after the override, then trace the Angular CLI test and AOT coverage entry points. Done means the override no longer makes the component template coverage inaccurate.

Written by the indexing model from the issue text.