Add more device properties to `SHARED_SENTRY_ATTRIBUTES` for child span propagation

Problem Statement

Mobile filtering/grouping spans by device.model get (no value) on child spans because device attributes are only stored on segment/root spans (via extract_segment_tags in Relay, PR #4651).

During segment processing, SHARED_SENTRY_ATTRIBUTES in enrichment.py copies certain root span attributes to child spans — sentry.device.class is already in this list, but sentry.device.model, sentry.device.brand, and sentry.device.name are not.

This might be a gap for mobile: when a former root span becomes a child span device data drops out of queries. Customers expect ‎⁠device.model⁠ on every span in a trace, not just the root.

#215475846510042

Solution Brainstorm

Possible to include either—followingmodel, brand or name to SHARED_SENTRY_ATTRIBUTES in enrichment.py#L18-L27:

Product Area

Ingestion and Filtering

Start in src/sentry/spans/consumers/process_segments/enrichment.py, especially the SHARED_SENTRY_ATTRIBUTES definition around lines 18–27, and compare it with the existing sentry.device.class entry. Confirm which of sentry.device.model, sentry.device.brand, and sentry.device.name should propagate to child spans, then verify that the selected attributes are present on child spans as well as root spans.