Performance: only load editor extensions in the admin context #76270

Job	Run time
Determine tests matrix	7s
Static analysis	8m 9s
Check plugin monorepo dep versions	33s
Storybook tests	2m 47s
PHP tests: PHP 7.2 WP latest	4m 32s
PHP tests: PHP 7.3 WP latest	3m 57s
PHP tests: PHP 7.4 WP latest	4m 6s
PHP tests: PHP 8.0 WP latest	4m 21s
PHP tests: PHP 8.1 WP latest	4m 0s
PHP tests: PHP 8.2 WP latest	3m 26s
PHP tests: PHP 8.3 WP latest	3m 22s
PHP tests: PHP 7.0 WP previous	4m 27s
PHP tests: PHP 8.2 WP previous	4m 32s
PHP tests: PHP 8.2 WP trunk	6m 35s
PHP tests: PHP 7.4 WP latest with WooCommerce	2m 57s
PHP tests: PHP 8.1 WP latest with wpcomsh	4m 46s
JS tests	2m 39s
	1h 5m 16s

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