Keep the wall-clock check and exclude it from the distributed plan

Per the review on the PR: restore both test files to master and add only
`SETTINGS make_distributed_plan = 0` to the `system.query_log` read.

`SET make_distributed_plan = 1` at the top of the test is session-wide, so
without the override that read is planned distributed as well. `EXPLAIN`
shows `MergingAggregated (merge)` over `GatherExchange` and
`ScatterExchange` above `ReadFromMergeTree (system.query_log)`; a background
merge can then invalidate the coordinator's part snapshot and the read fails
with `Code: 232 NO_SUCH_DATA_PART`. With the override the same read is a
plain `Aggregating` over `ReadFromMergeTree`.

This restores the wall-clock statement deleted by the previous commit, so
the six `no-*` tags and the `.reference` line are master's again, and the
only difference from master is the one settings clause.

Verified on a master debug build that carries the finished-stage drain fix:
10 of 10 runs match the reference, max `query_duration_ms` 84 ms.