Fix infinite resource updates due empty EnvVars #5213

Job	Run time
check_format_and_unit_tests	1m 17s
build / Special integration tests (17)	2m 2s
build / Special integration tests (21)	1m 52s
build / Special integration tests (24)	1m 41s
build / httpclient-tests (jdk) / Integration tests (24, 1.32.0, jdk)	22m 18s
build / httpclient-tests (jetty) / Integration tests (24, 1.32.0, jetty)	22m 13s
build / httpclient-tests (vertx) / Integration tests (24, 1.32.0, vertx)	22m 13s
build / integration_tests (17, 1.30.12) / Integration tests (17, 1.30.12, vertx)	21m 45s
build / integration_tests (17, 1.31.8) / Integration tests (17, 1.31.8, vertx)	23m 11s
build / integration_tests (17, 1.32.4) / Integration tests (17, 1.32.4, vertx)	23m 21s
build / integration_tests (17, 1.33.0) / Integration tests (17, 1.33.0, vertx)	22m 32s
build / integration_tests (21, 1.30.12) / Integration tests (21, 1.30.12, vertx)	22m 4s
build / integration_tests (21, 1.31.8) / Integration tests (21, 1.31.8, vertx)	23m 18s
build / integration_tests (21, 1.32.4) / Integration tests (21, 1.32.4, vertx)	22m 10s
build / integration_tests (24, 1.30.12) / Integration tests (24, 1.30.12, vertx)	21m 59s
build / integration_tests (21, 1.33.0) / Integration tests (21, 1.33.0, vertx)	22m 45s
build / integration_tests (24, 1.31.8) / Integration tests (24, 1.31.8, vertx)	23m 3s
build / integration_tests (24, 1.32.4) / Integration tests (24, 1.32.4, vertx)	22m 15s
build / integration_tests (24, 1.33.0) / Integration tests (24, 1.33.0, vertx)	22m 51s
	5h 44m 50s

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