Refactors `get_fetchable_url_or_file()` to remove it from the frontend (#7528)
* fetch
* add changeset
* add changeset
* simplify
* add changeset
* changes
* format
* add changeset
* changes
* format
* fixes
* lint
* fix components
* fixes
* typing
* format frontend
* path
* fixes
* fix stories
* lint
* lint
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