`relative-link.pipe.spec.ts` and `is-active-navigation-item.pipe.spec.ts`
arrived with this package's BUILD file in #57132, but no test target came with
them and `lib` excludes `**/*.spec.ts`, so nothing has ever compiled them.
`bazel query` reports both as not declared in the package.
They pass unmodified. `getRelativeUrl` has no other coverage in the repo, and
both pipes are used by the search dialog, the navigation list and the not
found page.
Use signals to avoid markForCheck.
Simplify takeUntilDestroyed usage by relying on implicit DestroyRef.
Improve type safety by typing inject(ElementRef).
Use the packaged versions of the packages instead of the local ts_project dependencies to prevent multiple versions of the deps to enter test bundles
PR Close#62413
To increase the ease of development we are moving @angular/docs into the adev directory within this repo. While
we are doing this to improve our development experience in the short term, efforts are also in place
to maintain a division between this @angular/docs (shared) code and adev itself, so that it can be extracted
back out in the future when components is ready to leverage it as well.
PR Close#57132
Kam