Avoid ExecutorService for DefaultCompositePerformanceCollector timeout #5752

Job	Run time
system-test (sentry-samples-spring-boot-opentelemetry-noagent, false, true)	5m 18s
system-test (sentry-samples-spring-boot-opentelemetry, true, false)	5m 36s
system-test (sentry-samples-spring-boot-jakarta, false, true)	4m 43s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry-noagent, false, true)	5m 30s
system-test (sentry-samples-spring-boot-4-webflux, false, true)	3m 18s
system-test (sentry-samples-logback, false, true)	1m 37s
system-test (sentry-samples-console, false, true)	1m 26s
system-test (sentry-samples-spring-boot-4, false, true)	3m 9s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, true)	5m 46s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, false)	5m 44s
system-test (sentry-samples-spring-boot-webflux, false, true)	2m 58s
system-test (sentry-samples-spring-boot-opentelemetry, true, true)	5m 24s
system-test (sentry-samples-spring-boot, false, true)	2m 59s
system-test (sentry-samples-log4j2, false, true)	1m 28s
system-test (sentry-samples-spring-jakarta, false, true)	2m 33s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, true)	5m 38s
system-test (sentry-samples-spring-7, false, true)	2m 25s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, false)	5m 39s
system-test (sentry-samples-spring, false, true)	2m 35s
system-test (sentry-samples-spring-boot-webflux-jakarta, false, true)	2m 48s
system-test (sentry-samples-jul, false, true)	1m 39s
	1h 18m 13s

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