fix(client): preserve data during replay suppression

[joshdchang]

Summary

• preserve row-bearing messages when a cached response is replayed for a previously acknowledged cursor
• suppress only the duplicate up-to-date control message while the tracker advances to the live cursor
• add a regression test and document the replay invariant in the TypeScript client specification

Root cause

The replay transition was represented as suppressBatch, and the client returned before publishing the entire response. A valid replay response can contain both data messages and the duplicate up-to-date marker, so this discarded rows together with the marker.

Fix

Represent the transition as suppressUpToDate, run the normal snapshot-tracker filtering, and remove only up-to-date messages before notifying subscribers. The client still avoids an empty subscriber callback when the response contains only the suppressed marker.

Fixes #4722.

Verification

• regression test fails on current main before the fix and passes after it
• corepack pnpm exec vitest --config vitest.unit.config.ts --run (438 tests)
• corepack pnpm run typecheck
• corepack pnpm run stylecheck
• Prettier check and git diff --check