fix(android): Remove AndroidRuntimeManager to prevent ANRs during SDK init #7008

Job	Run time
system-test (sentry-samples-spring-boot-opentelemetry, true, false)	6m 59s
system-test (sentry-samples-spring-boot, false, true)	6m 33s
system-test (sentry-samples-spring-boot-4, false, true)	6m 34s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, false)	7m 22s
system-test (sentry-samples-spring-boot-jakarta, false, true)	6m 32s
system-test (sentry-samples-log4j2, false, true)	2m 6s
system-test (sentry-samples-console, false, true)	2m 12s
system-test (sentry-samples-spring-boot-opentelemetry, true, true)	7m 16s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, true)	7m 31s
system-test (sentry-samples-spring-boot-webflux, false, true)	5m 15s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry, true, true)	7m 19s
system-test (sentry-samples-spring-boot-webflux-jakarta, false, true)	4m 49s
system-test (sentry-samples-spring-7, false, true)	4m 11s
system-test (sentry-samples-spring-jakarta, false, true)	4m 26s
system-test (sentry-samples-jul, false, true)	2m 7s
system-test (sentry-samples-spring-boot-jakarta-opentelemetry-noagent, false, true)	7m 17s
system-test (sentry-samples-spring-boot-4-webflux, false, true)	6m 12s
system-test (sentry-samples-logback, false, true)	2m 2s
system-test (sentry-samples-spring-boot-4-opentelemetry, true, false)	7m 15s
system-test (sentry-samples-spring, false, true)	4m 13s
system-test (sentry-samples-spring-boot-opentelemetry-noagent, false, true)	6m 53s
	1h 55m 4s

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