test(webapp): inject a container newPrimary in the not-found waitpoint-resolve case

The run-ops-primary fallback would otherwise reach the production db.server
singleton, which is not connectable in the webapp unit-test env, throwing where
the test expects a graceful null.

Author: d-cs

apps/webapp/test/resolveWaitpointThroughReadThrough.readthrough.test.ts

@@ -247,6 +247,9 @@ describe("resolveWaitpointThroughReadThrough (hetero PG14 legacy + dedicated run
         splitEnabled: true,
         newClient: recording(prisma17).handle,
         legacyReplica: recording(prisma14).handle,
+        // The run-ops-primary fallback also misses this never-seeded token; inject a container client
+        // so it does not reach for the unconnectable production singleton.
+        newPrimary: recording(prisma17).handle,
       },
     });