Discard envelopes on `4xx` and `5xx` response #6281

Job	Run time
system-test (sentry-samples-spring-boot-opentelemetry-noagent, false, true)	6m 8s
system-test (sentry-samples-spring-boot-opentelemetry, true, false)	6m 36s
system-test (sentry-samples-spring-boot, false, true)	3m 52s
system-test (sentry-samples-spring-boot-opentelemetry, true, true)	6m 21s
system-test (sentry-samples-console, false, true)	1m 44s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, false)	6m 32s
system-test (sentry-samples-spring-boot-4, false, true)	3m 50s
system-test (sentry-samples-spring, false, true)	3m 21s
system-test (sentry-samples-log4j2, false, true)	1m 57s
system-test (sentry-samples-spring-boot-webflux-jakarta, false, true)	4m 19s
system-test (sentry-samples-spring-jakarta, false, true)	3m 51s
system-test (sentry-samples-logback, false, true)	2m 0s
system-test (sentry-samples-jul, false, true)	1m 59s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry-noagent, false, true)	6m 22s
system-test (sentry-samples-spring-7, false, true)	3m 19s
system-test (sentry-samples-spring-boot-jakarta, false, true)	6m 6s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, false)	6m 39s
system-test (sentry-samples-spring-boot-4-webflux, false, true)	3m 31s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, true)	6m 37s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, true)	6m 26s
system-test (sentry-samples-spring-boot-webflux, false, true)	3m 51s
	1h 35m 21s

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