crosscluster/physical: disable auto stats jobs on the standby tenant

[msbutler]

The stats jobs are running and continuously failing, creating a lot of noise in the logs.

I241120 15:14:45.919372 536844 sql/distsql_plan_stats.go:206 ⋮ [T4,Vdestination-tenant-readonly,n3,job=AUTO CREATE STATS id=1022509992777908227,create-stats-distsql] 3004  using computed sample size of 10000 for histogram construction
I241120 15:14:45.951649 536844 jobs/registry.go:1591 ⋮ [T4,Vdestination-tenant-readonly,n3] 3005  AUTO CREATE STATS job 1022509992777908227: stepping through state reverting with error: delete-statistics: cannot mutate materialized view ‹"table_statistics"›

We made a deliberate decision that the standby queries would rely on the replicating table stats table: https://github.com/msbutler/cockroach/blob/master/pkg/sql/catalog/replication/reader_catalog.go#L277

Jira issue: CRDB-44742

[blathers-crl[bot]]

cc @cockroachdb/disaster-recovery

[blathers-crl[bot]]

Hi @msbutler, please add branch-* labels to identify which branch(es) this C-bug affects.

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