OpenTelemetry drop-in fixes for Apache Pulsar (#7500)

* Include OTel instrumentation-api incubator types for messaging

Author: mcculls

dd-java-agent/agent-otel/otel-bootstrap/build.gradle

@@ -82,7 +82,6 @@ shadowJar {
   include 'io/opentelemetry/instrumentation/api/**'
   exclude 'io/opentelemetry/instrumentation/api/incubator/log/**'
   exclude 'io/opentelemetry/instrumentation/api/incubator/semconv/db/*Sanitizer*'
-  exclude 'io/opentelemetry/instrumentation/api/incubator/semconv/messaging/**'
   exclude 'io/opentelemetry/instrumentation/api/internal/cache/**'
   exclude 'io/opentelemetry/instrumentation/api/internal/RuntimeVirtualFieldSupplier*'
   exclude 'io/opentelemetry/instrumentation/api/util/VirtualField*'