Hi @laurentgrangier ,
thanks for the updates. This LGTM now. Thanks for all your work ❤️

I tested this locally with Angular 18 and 19 in the angular seed. Both worked fine :)

Regarding the code coverage: Executing the tests locally I could see that the code coverage files are now generated at expected location packages/angular-material/coverage/lcov.info.
Apparently, there is another issue with the coverage report not being displayed in the PR as this is also the case for another, independent PR. Thus, nothing additional needs to be done here.

Note that I will close this PR and open a followup one because we generally do not accept re-generated lock file contributions from third party contributors for security reasons. I could not push a re-generated one on your branch as this is disabled in your fork's settings. Thus, I'll push this to a branch here and open a new PR from there.