Add span based feature flags #5715

Job	Run time
system-test (sentry-samples-spring-boot-opentelemetry-noagent, false, true)	7m 34s
system-test (sentry-samples-spring-boot-opentelemetry, true, true)	9m 25s
system-test (sentry-samples-spring-boot-jakarta, false, true)	9m 8s
system-test (sentry-samples-spring-boot, false, true)	7m 25s
system-test (sentry-samples-spring-boot-webflux, false, true)	7m 4s
system-test (sentry-samples-jul, false, true)	5m 15s
system-test (sentry-samples-spring-boot-4, false, true)	5m 40s
system-test (sentry-samples-spring, false, true)	6m 53s
system-test (sentry-samples-spring-7, false, true)	7m 17s
system-test (sentry-samples-spring-jakarta, false, true)	7m 28s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry-noagent, false, true)	8m 1s
system-test (sentry-samples-logback, false, true)	4m 26s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, false)	10m 12s
system-test (sentry-samples-spring-boot-4-webflux, false, true)	5m 41s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, true)	10m 20s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, true)	8m 15s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, false)	8m 6s
system-test (sentry-samples-log4j2, false, true)	3m 29s
system-test (sentry-samples-spring-boot-webflux-jakarta, false, true)	7m 10s
system-test (sentry-samples-spring-boot-opentelemetry, true, false)	9m 30s
system-test (sentry-samples-console, false, true)	3m 31s
	2h 31m 50s

Provide feedback