fix(shs-5958): fix video embed test #1144

Job	Run time
set_sites	39s
lint_theme	40s
test_phpunit	1m 33s
test_new_site	10m 35s
test_existing_site (em1060)	6m 21s
test_existing_site (gender)	7m 29s
test_existing_site (hshr)	6m 29s
test_existing_site (humanitiescore)	5m 33s
test_existing_site (politicalscience)	8m 28s
test_existing_site (psychology)	8m 41s
test_existing_site (ptarmigan)	5m 37s
test_existing_site (shenlab)	8m 22s
test_existing_site (sitp)	9m 10s
test_existing_site (west)	8m 30s
deploy_branch	0s
	1h 28m 7s

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