Charset: Support multibyte email addresses in `antispambot()` #34886

Job	Run time
Determine Matrix	3s
Single Site Default / Test before	13m 26s
Multisite Memcached / Test current	13m 29s
Multisite Default / Test current	13m 0s
Multisite Default / Test before	14m 3s
Single Site Memcached / Test before	13m 30s
Single Site Default / Test current	14m 4s
Single Site Memcached / Test current	13m 46s
Multisite Memcached / Test before	14m 10s
Compare / Single Site Memcached	16s
Compare / Multisite Memcached	15s
Compare / Single Site Default	20s
Compare / Multisite Default	14s
Slack Notifications	-1s
Failed workflow tasks	-1s
	1h 50m 34s

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