Update dependency svelte to v4 #71941

Job	Run time
Determine tests matrix	8s
Static analysis	8m 28s
Check plugin monorepo dep versions	31s
Storybook tests	3m 8s
PHP tests: PHP 7.0 WP latest	9m 17s
PHP tests: PHP 7.2 WP latest	8m 53s
PHP tests: PHP 7.3 WP latest	8m 40s
PHP tests: PHP 7.4 WP latest	10m 10s
PHP tests: PHP 8.0 WP latest	10m 19s
PHP tests: PHP 8.1 WP latest	9m 45s
PHP tests: PHP 8.2 WP latest	9m 22s
PHP tests: PHP 8.3 WP latest	8m 54s
PHP tests: PHP 8.2 WP previous	4m 34s
PHP tests: PHP 8.2 WP trunk	6m 59s
PHP tests: PHP 7.4 WP latest with WooCommerce	3m 19s
JS tests	5m 8s
	1h 47m 35s

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