Which @angular/* package(s) are the source of the bug?

compiler

Is this a regression?

No

Description

Given the component:

@Component({
  selector: 'app-root',
  standalone: true,
  template: `
    @let i = 0;
    {{ this.i }}
  `,
})
export class App {
  protected i = 1;
}

What I expected: 1
What I got instead: 0
Given the warning below, it seems even the compiler is confused.

Please provide a link to a minimal reproduction of the bug

https://stackblitz.com/edit/stackblitz-starters-pesdcd?file=src%2Fmain.ts

Please provide the exception or error you saw

▲ [WARNING] NG8112: @let i is declared but its value is never read. [plugin angular-compiler]

src/main.ts:8:4:
  8 │     @let i = 0;
    ╵     ~~~~~~~~~~

Please provide the environment you discovered this bug in (run ng version)

Angular CLI: 18.2.7
Node: 18.20.3
Package Manager: npm 10.2.3
OS: linux x64

Angular: 18.2.7
... animations, cli, common, compiler, compiler-cli, core, forms
... platform-browser, router

Package Version

@angular-devkit/architect 0.1802.7
@angular-devkit/build-angular 18.2.7
@angular-devkit/core 18.2.7
@angular-devkit/schematics 18.2.7
@schematics/angular 18.2.7
rxjs 7.8.1
typescript 5.5.4
zone.js 0.14.10

Anything else?

No response