I just migrated my Angular project's file naming to the new naming conventions.
Basically the new conventions allow template file to drop the component part in the file name.
So you'll end up with a template file called users.html and not users.component.html.
What I noticed is, that prettier assumes I'm editing a normal HTML file instead of an Angular template file. So no formatting for @case, etc, happens.
Maybe there is a way for prettier to support the "non-component" file names as well? It would be pretty annoying to have to rename a template file to contain "component" in the file name, save file to reformat, then rename it back.
EDIT: Reference
https://angular.dev/style-guide#naming