feat: Remove check for attachment post type that can’t be overridden #150

Job	Run time
PHP 7.4 \| WP 6.1 \| prefer-stable	3m 59s
PHP 7.4 \| WP 6.1 (MS) \| prefer-stable	4m 0s
PHP 7.4 \| WP latest \| prefer-stable	4m 12s
PHP 7.4 \| WP latest (MS) \| prefer-stable	4m 17s
PHP 7.4 \| WP trunk \| prefer-stable	4m 22s
PHP 8.1 \| WP trunk \| prefer-stable	4m 16s
PHP 8.0 \| WP latest \| prefer-stable	4m 15s
PHP 8.1 \| WP latest \| prefer-stable	3m 58s
PHP 7.4 (Imagick) \| WP latest \| prefer-stable	4m 14s
PHP 7.4 (with coverage) \| WP latest \| prefer-stable	4m 15s
	41m 48s

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