Issue #3524237: Added the config_page entity metadata to the getFieldView...

Oleh Shevchukrequested to merge
issue/config_pages-3524237:3524237-configpagesfield-twig-filter into 8.x-2.x

Issue #3524237: Added the config_page entity metadata to the getFieldView method to fix caching issues.

Closes #3524237

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