refactor: Consolidate GCPCLOUDRUNREVISION into existing GCPRUNREVISION (#3037)

The GCPCLOUDRUNREVISION entity type was added recently but duplicates
the pre-existing GCPRUNREVISION type used for GCP Cloud Run revisions.
Consolidate by:

- Deleting entity-types/infra-gcpcloudrunrevision/ entirely (definition.yml,
  golden_metrics.yml, summary_metrics.yml, dashboard.json).
- Adding golden_metrics.yml and summary_metrics.yml under
  entity-types/infra-gcprunrevision/, copied verbatim from the deleted
  cloudrun folder (queries reference gcp.run.* metrics which are entity-
  type-agnostic).
- Extending entity-types/infra-gcprunrevision/definition.yml with the
  goldenTags block ([gcp.projectId, gcp.region]) that was on the deleted
  definition; type key stays GCPRUNREVISION.

Downstream (gcp-polling-v2 synthesis, infra-summary templates, UI
definitions) must also point at GCPRUNREVISION instead of the removed
GCPCLOUDRUNREVISION.

Co-authored-by: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: sparsi17

entity-types/infra-gcpcloudrunrevision/dashboard.json

@@ -1,5 +1,8 @@
 domain: INFRA
 type: GCPRUNREVISION
+goldenTags:
+- gcp.projectId
+- gcp.region
 configuration:
   entityExpirationTime: DAILY
   alertable: true