* Display non-post embeds in composer preview * Remove starter pack special case from ExternalLinkEmbed This should not be needed because starter pack composer preview now goes through the record preview codepath, just like in the feed/post view. * Hide record ext links if quote is present * Align remove buttons Remove the implicit top padding in record embeds and make it conditional, which is similar to how we treat external link embeds. This makes the X button appear in the same place for record embeds as with links.