[CALCITE-7420] Enable !ok for ~290 tests in Quidem .iq files

Previously, tests using sales-schema tables (e.g., sales.emp) or
focusing on plan transformation had comments like:
  # Not using !ok: query uses the sales schema, which is not in the scott database.
  # Not using !ok: this test focuses on plan transformation (see !sub-plan).

This commit enables !ok for all such tests that are compatible with the
scott HSQLDB database, adding the expected query results. Sales-schema
references (sales.emp, sales.dept, etc.) are converted to unqualified
names (emp, dept, etc.) so they run against the scott catalog.

Tests that remain disabled are those using non-scott tables
(empnullables, deptnullables, DEPT_NESTED), non-deterministic functions
(RAND, RAND_INTEGER, CURRENT_TIMESTAMP), or queries that fail in H2
due to implementation limits (very large LIMIT/OFFSET values, EXCEPT
with correlated subqueries, ORDER BY null, SINGLE_VALUE aggregation
with multiple rows).

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: julianhyde

core/src/test/resources/sql/rule/aggregate-expand-distinct-aggregates.iq

@@ -109,8 +109,28 @@ LogicalProject(X=[$0], EXPR$1=[$2], Y=[$1])
 # AggregateRemoveRule removes a GROUP BY with all-unique keys (DISTINCT on empno,
 # deptno where empno is unique), so the Aggregate is eliminated.
 
-select distinct empno, deptno from sales.emp;
-# Not using !ok: query uses the sales schema, which is not in the scott database.
+select distinct empno, deptno from emp;
++-------+--------+
+| EMPNO | DEPTNO |
++-------+--------+
+|  7369 |     20 |
+|  7499 |     30 |
+|  7521 |     30 |
+|  7566 |     20 |
+|  7654 |     30 |
+|  7698 |     30 |
+|  7782 |     10 |
+|  7788 |     20 |
+|  7839 |     10 |
+|  7844 |     30 |
+|  7876 |     20 |
+|  7900 |     30 |
+|  7902 |     20 |
+|  7934 |     10 |
++-------+--------+
+(14 rows)
+
+!ok
 
 LogicalAggregate(group=[{0, 1}])
   LogicalProject(EMPNO=[$0], DEPTNO=[$7])