BLT-5237: Fix failing PHPUnit tests. (#4747) #1841

Job	Run time
build (STATIC_CODE_ANALYSIS, 8.1, FALSE, ^4)	35s
build (INTEGRATED_TEST_ON_OLDEST_SUPPORTED, 8.1, FALSE, ^4)	28s
build (INTEGRATED_TEST_ON_PREVIOUS_MINOR, 8.1, FALSE, ^4)	6m 45s
build (ISOLATED_TEST_ON_CURRENT, 8.1, FALSE, ^4)	2m 3s
build (INTEGRATED_TEST_ON_CURRENT, 8.1, FALSE, ^4)	9m 52s
build (ISOLATED_TEST_ON_CURRENT_DEV, 8.1, FALSE, ^4)	2m 38s
build (INTEGRATED_TEST_ON_CURRENT_DEV, 8.1, FALSE, ^4)	5m 27s
build (STRICT_DEPRECATED_CODE_SCAN, 8.1, FALSE, ^4)	29s
build (ISOLATED_TEST_ON_NEXT_MINOR, 8.1, FALSE, ^4)	30s
build (DEPRECATED_CODE_SCAN_W_CONTRIB, 8.1, FALSE, ^4)	1m 5s
build (INTEGRATED_TEST_ON_NEXT_MINOR_DEV, 8.1, FALSE, ^4)	47s
build (ISOLATED_TEST_ON_NEXT_MINOR_DEV, 8.1, FALSE, ^4)	1m 46s
build (LOOSE_DEPRECATED_CODE_SCAN, 8.1, FALSE, ^4)	1m 39s
build (INTEGRATED_TEST_ON_LATEST_LTS, 8.2, FALSE)	25s
build (ISOLATED_TEST_ON_CURRENT, 8.1, TRUE)	2m 3s
build (ISOLATED_TEST_ON_CURRENT, 8.2)	2m 3s
all-successful	3s
	38m 38s

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