refactor: move app/emoji modules - #41917

No issues found. Diff projection: 4 metadata-only change(s), 0 unprojectable textual change(s). Spectre coverage incomplete: selected 30, scanned 30, skipped 0, oversized 0, capped 2, truncated 0, failed 0, invalid 0, rejected 0, repairs 0, repaired responses 0, repaired findings 0, cancelled 0, rate-limited 0, concurrency-limited 0, circuit-open 0. Reason: file-cap-exceeded.