Strip PHP execution tags from pattern body content #1110

Job	Run time
E2E Tests	3m 49s
Compute previous WordPress version	4s
Lint	1m 57s
PHP 8.1 (WP previous major version)	3m 3s
PHP 7.4 (WP previous major version)	2m 45s
PHP 8.0 (WP previous major version)	3m 4s
PHP 8.0	3m 19s
PHP 8.2 (WP previous major version)	3m 8s
PHP 7.4	3m 7s
PHP 8.1	3m 10s
PHP 8.3	3m 6s
PHP 8.3 (WP previous major version)	3m 16s
PHP 8.2	3m 8s
	36m 56s

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