ref(samples): [Queue Instrumentation 19] Drop Kafka auto-config exclude from Spring Boot samples

Remove `spring.autoconfigure.exclude=KafkaAutoConfiguration` from the
default `application.properties` and the matching empty override from
`application-kafka.properties` in the three Spring Boot Jakarta samples.

`spring.autoconfigure.exclude` is a single list property, so overriding
it in a profile replaces the whole list rather than merging. Adding a
sibling `rabbitmq` profile with the same pattern would not compose —
activating one profile would unsilence the other's auto-config.

The `@Profile("kafka")` annotations already on `KafkaConsumer` and
`KafkaController` gate the actual listener container and endpoint, so
no broker connection is attempted when the profile is inactive.
`KafkaAutoConfiguration` still runs and creates an unused
`KafkaTemplate` bean in that case, which is harmless.

Sentry's own Kafka auto-config remains gated on
`sentry.enable-queue-tracing=true`, which is only set in
`application-kafka.properties`, so Sentry instrumentation behavior is
unchanged.

Author: adinauer

sentry-samples/sentry-samples-spring-boot-jakarta-opentelemetry-noagent/src/main/resources/application-kafka.properties

@@ -1,7 +1,6 @@
 # Kafka — activate with: --spring.profiles.active=kafka
 sentry.enable-queue-tracing=true
 
-spring.autoconfigure.exclude=
 spring.kafka.bootstrap-servers=localhost:9092
 spring.kafka.consumer.group-id=sentry-sample-group
 spring.kafka.consumer.auto-offset-reset=earliest

sentry-samples/sentry-samples-spring-boot-jakarta-opentelemetry-noagent/src/main/resources/application.properties

@@ -35,9 +35,6 @@ spring.graphql.graphiql.enabled=true
 spring.graphql.websocket.path=/graphql
 spring.quartz.job-store-type=memory
 
-# Kafka is only active with the 'kafka' profile (--spring.profiles.active=kafka)
-spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.kafka.KafkaAutoConfiguration
-
 # Cache tracing
 sentry.enable-cache-tracing=true
 spring.cache.cache-names=todos

sentry-samples/sentry-samples-spring-boot-jakarta-opentelemetry/src/main/resources/application-kafka.properties

@@ -1,7 +1,6 @@
 # Kafka — activate with: --spring.profiles.active=kafka
 sentry.enable-queue-tracing=true
 
-spring.autoconfigure.exclude=
 spring.kafka.bootstrap-servers=localhost:9092
 spring.kafka.consumer.group-id=sentry-sample-group
 spring.kafka.consumer.auto-offset-reset=earliest

sentry-samples/sentry-samples-spring-boot-jakarta-opentelemetry/src/main/resources/application.properties

@@ -35,9 +35,6 @@ spring.graphql.graphiql.enabled=true
 spring.graphql.websocket.path=/graphql
 spring.quartz.job-store-type=memory
 
-# Kafka is only active with the 'kafka' profile (--spring.profiles.active=kafka)
-spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.kafka.KafkaAutoConfiguration
-
 # Cache tracing
 sentry.enable-cache-tracing=true
 spring.cache.cache-names=todos

sentry-samples/sentry-samples-spring-boot-jakarta/src/main/resources/application-kafka.properties

@@ -1,7 +1,6 @@
 # Kafka — activate with: --spring.profiles.active=kafka
 sentry.enable-queue-tracing=true
 
-spring.autoconfigure.exclude=
 spring.kafka.bootstrap-servers=localhost:9092
 spring.kafka.consumer.group-id=sentry-sample-group
 spring.kafka.consumer.auto-offset-reset=earliest

sentry-samples/sentry-samples-spring-boot-jakarta/src/main/resources/application.properties

@@ -38,9 +38,6 @@ spring.quartz.job-store-type=memory
 # Cache tracing
 sentry.enable-cache-tracing=true
 
-# Kafka is only active with the 'kafka' profile (--spring.profiles.active=kafka)
-spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.kafka.KafkaAutoConfiguration
-
 spring.cache.cache-names=todos
 spring.cache.caffeine.spec=maximumSize=500,expireAfterAccess=600s