Use comments for embed insertion #19860
Merged
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In dev-mode, the elements aren't replaced as SERVE_APP is false. That'd cause the whole app to be wrapped in a non-existing custom element:
Which was due to the fact that we used
<embed-head />
as the token to replace. By switching to a comment, we can prevent that type of weirdness if the embedding fails or isn't available in dev mode. Also switched the replacement from a regex to a string, as it's a known unique comment we're replacing.