refactor: remove examples reliance on APF internal structure

Loading the Material examples now uses the newly provide `loadExample` helper
function and avoids the need to manually specify APF directory structures which
can change as new ECMAScript versions are used.

Components PR: angular/components#26968

Author: clydin

.aspect/rules/external_repository_action_cache/npm_translate_lock_LTE4Nzc1MDcwNjU=

@@ -1,6 +1,6 @@
 # Input hashes for repository rule npm_translate_lock(name = "npm", pnpm_lock = "//:pnpm-lock.yaml").
 # This file should be checked into version control along with the pnpm-lock.yaml file.
 .npmrc=-1306950124
-pnpm-lock.yaml=177233578
-yarn.lock=713146018
-package.json=-737298610
+pnpm-lock.yaml=509889123
+yarn.lock=-1190380766
+package.json=379393618

package.json

@@ -35,7 +35,7 @@
     "@angular/cdk-experimental": "^16.0.0-next.4",
     "@angular/common": "^16.0.0-next.5",
     "@angular/compiler": "^16.0.0-next.5",
-    "@angular/components-examples": "https://github.com/angular/material2-docs-content.git#2f63410f273e10e1539f08f1ea99a02edf6ab6b9",
+    "@angular/components-examples": "https://github.com/angular/material2-docs-content.git#5d7786c0abcb58e0dfe2e4922f1cf58e6e55e61f",
     "@angular/core": "^16.0.0-next.5",
     "@angular/forms": "^16.0.0-next.5",
     "@angular/google-maps": "^16.0.0-next.4",