Streamwrapper: Move logic out into the open #5694

Job	Run time
WP 5.8.x, multisite: no, JP: yes, PHP: 7.4	8m 57s
WP 5.9.x, multisite: no, JP: yes, PHP: 7.4	8m 28s
WP 6.0.x, multisite: no, JP: yes, PHP: 7.4	8m 19s
WP 6.1.x, multisite: no, JP: yes, PHP: 7.4	9m 22s
WP latest, multisite: no, JP: yes, PHP: 7.4	8m 54s
WP nightly, multisite: no, JP: yes, PHP: 7.4	9m 27s
WP latest, multisite: yes, JP: yes, PHP: 7.4	8m 56s
WP nightly, multisite: yes, JP: yes, PHP: 7.4	8m 58s
WP latest, multisite: no, JP: no, PHP: 7.4	7m 33s
WP latest, multisite: yes, JP: no, PHP: 7.4	8m 18s
WP 6.2.x, multisite: no, JP: yes, PHP: 8.0	8m 32s
WP 6.2.x, multisite: yes, JP: yes, PHP: 8.0	9m 1s
WP latest, multisite: no, JP: yes, PHP: 8.0	12m 45s
WP latest, multisite: yes, JP: yes, PHP: 8.0	13m 39s
WP nightly, multisite: no, JP: yes, PHP: 8.0	8m 38s
WP nightly, multisite: yes, JP: yes, PHP: 8.0	9m 2s
WP latest, multisite: no, JP: yes, PHP: 8.1	11m 22s
WP latest, multisite: yes, JP: yes, PHP: 8.1	9m 57s
WP nightly, multisite: no, JP: yes, PHP: 8.2	8m 25s
WP nightly, multisite: yes, JP: yes, PHP: 8.2	8m 55s
WP nightly, multisite: no, JP: yes, PHP: 8.3	9m 15s
WP nightly, multisite: yes, JP: yes, PHP: 8.3	8m 52s
	3h 25m 35s

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