fix(angular): fix component export logic to handle internal modules and secondary entry points

[leosvelperez]

Current Behavior

When creating a component in a library using the @nrwl/angular:component generator and passing export=true, the component is exported from the corresponding NgModule and from the library's entry point file. This is not entirely correct. If the component being created belongs to an internal module of the library, it shouldn't be exported from the library's entry point.

Likewise, trying to create a component with export=true in a library's secondary entry points errors.

Expected Behavior

A component should only be exported in the library's entry point when the module it belongs to is also exported.
We should be able to create components in a library's secondary entry point.

Related Issue(s)

Fixes #

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[Coly010]

LGTM!
Left one small question :)

[github-actions]

This pull request has already been merged/closed. If you experience issues related to these changes, please open a new issue referencing this pull request.