Structured log emits a duplicate key when it appears in both the global context and a per-event field #12

LoggingEvent.log() de-duplicates MDC keys against the union of the global context and the per-event fields, but a key present in BOTH the global context and a per-event field(...) is still written twice — once while emitting the global context and once while emitting the fields (sdk-core/src/main/kotlin/org/dexpace/sdk/core/instrumentation/LoggingEvent.kt) — producing a duplicate key in the emitted JSON object.

This is the same duplicate-key class the per-event/global MDC de-duplication already handles, on a different pair of sources. Suggested fix: when emitting the global context, skip any key also present in the per-event fields (per-event fields win), mirroring the existing MDC guard.