feat: support etag for declarative stores #12760

Job	Run time
CLI Integration Tests	4m 43s
Integration Tests (api/sqlite)	5m 44s
UI Integration Tests	6m 3s
Integration Tests (api/libsql)	5m 29s
Integration Tests (api/postgres)	5m 40s
Integration Tests (api/mysql)	5m 56s
Integration Tests (api/cockroach)	5m 43s
Integration Tests (api/cache)	5m 37s
Integration Tests (api/cachetls)	5m 38s
Integration Tests (fs/git)	5m 44s
Integration Tests (fs/local)	6m 31s
Integration Tests (fs/s3)	5m 42s
Integration Tests (fs/oci)	6m 33s
Integration Tests (fs/azblob)	5m 48s
Integration Tests (fs/gcs)	6m 0s
Integration Tests (import/export)	7m 13s
Integration Tests (authn)	6m 47s
Integration Tests (authz)	7m 31s
Integration Tests (rest)	6m 25s
	1h 54m 47s

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