Guard the call to apply_filters() for cases where it's unavailable (#… #161

Job	Run time
Run Tests (PHP 7.4, WP 5.5.x, multisite: no)	25s
Run Tests (PHP 7.4, WP 5.5.x, multisite: yes)	32s
Run Tests (PHP 7.4, WP 5.6.x, multisite: no)	29s
Run Tests (PHP 7.4, WP 5.6.x, multisite: yes)	35s
Run Tests (PHP 7.4, WP 5.7.x, multisite: no)	24s
Run Tests (PHP 7.4, WP 5.7.x, multisite: yes)	25s
Run Tests (PHP 7.4, WP 5.8.x, multisite: no)	20s
Run Tests (PHP 7.4, WP 5.8.x, multisite: yes)	24s
Run Tests (PHP 7.4, WP 5.9.x, multisite: no)	23s
Run Tests (PHP 7.4, WP 5.9.x, multisite: yes)	25s
Run Tests (PHP 7.4, WP latest, multisite: no)	25s
Run Tests (PHP 7.4, WP latest, multisite: yes)	2m 27s
Run Tests (PHP 7.4, WP nightly, multisite: no)	23s
Run Tests (PHP 7.4, WP nightly, multisite: yes)	27s
Run Tests (PHP 8.0, WP latest, multisite: no)	24s
Run Tests (PHP 8.0, WP latest, multisite: yes)	39s
Run Tests (PHP 8.0, WP nightly, multisite: no)	34s
Run Tests (PHP 8.0, WP nightly, multisite: yes)	24s
Run Tests (PHP 8.1, WP latest, multisite: no)	31s
Run Tests (PHP 8.1, WP latest, multisite: yes)	29s
Run Tests (PHP 8.1, WP nightly, multisite: no)	33s
Run Tests (PHP 8.1, WP nightly, multisite: yes)	22s
Run Tests (PHP 8.2, WP latest, multisite: no)	25s
Run Tests (PHP 8.2, WP latest, multisite: yes)	29s
Run Tests (PHP 8.2, WP nightly, multisite: no)	24s
Run Tests (PHP 8.2, WP nightly, multisite: yes)	23s
	13m 41s

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