core(preload): ignore cross-frame requests #10847
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Summary
Chrome won't reuse preload requests from other frames, so we shouldn't try to suggest them. Common example is a Wix page iframing another Wix page.
All their assets come from a shared origin (parastorage.com) but the root origins are different (customer-a.com and customer-b.com).
Related Issues/PRs
fixes #10467