It's perfectly valid to add input filtering on top of type=email if you want to further restrict the input set. Maybe you hate people with gmail addresses or only want to allow email addresses at your local firm (both examples from before!). In that case, having a more restrictive pattern makes sense.
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Жители Санкт-Петербурга устроили «крысогон»17:52
В России ответили на имитирующие высадку на Украине учения НАТО18:04
if (tc = pc && ac 1 && w.isEmpty()) {