fix(eap): Add preprod item type to EAP items deletion config

[sentry]

Summary

Add preprod to the allowed_attributes_by_item_type in the EAP items storage deletion settings, with sentry.trace_id as its allowed attribute.

Fixes SENTRY-5GX0

Problem

When deleting a preprod artifact, sentry calls Snuba's EndpointDeleteTraceItems RPC with TRACE_ITEM_TYPE_PREPROD (value: 11) and a filter on sentry.trace_id. Snuba returns a 500 error:

No attribute-based deletions configured for item_type preprod (value: 11). Configured item types: [occurrence]

The preprod item type was ingested into EAP but the corresponding deletion handler was never added to the storage configuration.

Fix

Add a preprod key to allowed_attributes_by_item_type in eap_items.yaml with sentry.trace_id as the allowed attribute, mirroring the existing occurrence entry. This allows the _validate_attribute_conditions function in bulk_delete_query.py to accept preprod deletion requests.

Before

allowed_attributes_by_item_type:
  occurrence:
    - group_id

After

allowed_attributes_by_item_type:
  occurrence:
    - group_id
  preprod:
    - sentry.trace_id

Validation

• The sentry deletion code in preprod/helpers/deletion.py sends TRACE_ITEM_TYPE_PREPROD with sentry.trace_id as the attribute filter key — this matches the new config entry exactly.
• The YAML schema (json_schema.py) defines allowed_attributes_by_item_type as an object with additionalProperties of array[string], so the new entry is schema-valid.
• TRACE_ITEM_TYPE_PREPROD is already used elsewhere in snuba (routing strategies, querylog) confirming it's a recognized item type.