fix: #3624669 Let the recipe apply to a site that already has media configuration

Applying this recipe to a site that already carries any of the media configuration it ships failed outright:

The configuration 'core.entity_form_display.media.audio.bulk_upload' exists already and does not match the recipe's configuration

The difference is real, not cosmetic: the shipped copy hides langcode, while a current site hides Scheduler's publish_on, publish_state, unpublish_on and unpublish_state.

Consequence: the recipe could not be applied after install, and neither could any recipe depending on it - varbase_podcasts_base hits this first.

What changed

One line, strict: false under config: in recipe.yml. varbase_blog_base, varbase_news_base, varbase_events_base and varbase_podcasts_base all set strict: false already, so this brings media base in line with them.

Issue: https://www.drupal.org/project/varbase_media_base/issues/3624669

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