Replace `mat.core()` with `mat.elevation-classes()` and `mat.app-background()`

Proprietary

Material 19 deprecated mat.core(). Replaces @include mat.core() with the two mixins that it still emitted, mat.elevation-classes() and mat.app-background(). This is the mat.core migration of the @angular/material 19 ng update.

org.openrewrite.angular.material.MigrateMatCoreToElevationClasses

mod run . --recipe=org.openrewrite.angular.material.MigrateMatCoreToElevationClasses

Install it once, then run it on every repository under the current directory. New to the Moderne CLI? Set it up.

Replace mat.core() with mat.elevation-classes() and mat.app-background()

Replace `mat.core()` with `mat.elevation-classes()` and `mat.app-background()`