ci(docs-infra): use the regular (non-Ivy) Angular packages in `test_docs_examples_ivy` CI job (#36015)
ci(docs-infra): use the regular (non-Ivy) Angular packages in `test_docs_examples_ivy` CI job (#36015)

The docs examples tests are run both with Ivy turned off and on. When
Ivy is turned on, ngcc is used to convert all dependencies (including
the Angular framework packages to Ivy).

Previously, in order to speed things up, the `test_docs_examples_ivy` CI
job would use Angular packages built with Ivy (from
`dist/packages-dist-ivy-aot`). This however was a deviation from what
happens in real-world applications.

This commit changes the `test_docs_examples_ivy` CI job to always use
the regular Angular packages (as published on npm) and use ngcc to
convert them to Ivy.

Relevant discussion:
https://github.com/angular/angular/pull/35091#discussion_r373775396

PR Close #36015

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