Bug: responsive images not supported in link preload headers #32437
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…32445) Link headers are optionally supported for cases where you prefer to send resource loading hints before you're ready to send the body of a request. While many resources can be correctly preloaded from a link header responsive images are currently not supported and end up preloading the default src rather than the correctly sized image. Until responsive images are supported React will not allow these images to preload as headers and will retain them to preload as HTML. closes: #32437 DiffTrain build for [9b042f9](9b042f9)
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Browsers does not yet support preloading responsive images from link headers. Currently React can produce link headers for resource preloading and in particular can do so for images. However if an image uses srcset or sizes it's preload won't correctly load the right variant if preloaded using a link header so we should exclude these image preloads from the headers mechanism.
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