fix(android): Name the device-info caching thread (#5684)

* fix(android): Name the device-info caching thread

DefaultAndroidEventProcessor created its device-info pre-caching
executor via Executors.newSingleThreadExecutor() with no ThreadFactory,
so the JDK named the thread pool-N-thread-M and it was not identifiable
as an SDK thread. Supply a ThreadFactory that names it
SentryDeviceInfoCache, matching the convention used elsewhere in the SDK.

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

* changelog

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Co-authored-by: Claude Opus 4.8 <noreply@anthropic.com>