refactor: switch "e2e-app" away from cross-package relative Sass imports

Author: devversion

src/e2e-app/BUILD.bazel

@@ -88,8 +88,8 @@ sass_binary(
         "external/npm/node_modules",
     ],
     deps = [
-        "//src/material:theming_bundle",
-        "//src/material-experimental:theming_bundle",
+        "//src/material:sass_lib",
+        "//src/material-experimental:sass_lib",
         "//src/material/core:theming_scss_lib",
     ],
 )

src/e2e-app/theme.scss

@@ -1,5 +1,5 @@
-@use '../material' as mat;
-@use '../material-experimental' as experimental;
+@use '@angular/material' as mat;
+@use '@angular/material-experimental' as experimental;
 
 // Plus imports for other components in your app.