test(run-ops split): add runOpsSplitReadEnabled to the callback route test's db.server mock

The callback route now resolves the waitpoint via resolveWaitpointThroughReadThrough,
whose module reads runOpsSplitReadEnabled off ~/db.server at import. The test's vi.mock
omitted that export, so the mocked module threw at import and the whole suite failed to
collect. Provide it (split-on) to match the read path the route exercises; ksuid (NEW)
waitpoint ids route to the runOpsNewReplica proxy pointing at the seeded container.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>

Author: d-cs

apps/webapp/test/waitpointCallback.controlPlane.test.ts

@@ -37,6 +37,9 @@ vi.mock("~/db.server", async () => {
     runOpsNewPrisma: lazyProxy(replicaHolder, "replicaHolder.client"),
     runOpsNewReplica: lazyProxy(replicaHolder, "replicaHolder.client"),
     runOpsLegacyReplica: lazyProxy(replicaHolder, "replicaHolder.client"),
+    // The route's read-through helper reads this off `~/db.server`; split-on routes ksuid (NEW)
+    // ids to the `runOpsNewReplica` proxy, which points at the seeded container.
+    runOpsSplitReadEnabled: true,
     sqlDatabaseSchema: Prisma.sql([`public`]),
   };
 });