Use shared notification localization

[Pigbibi]

Summary

• switch duplicated notification localization helpers to the shared QuantPlatformKit helper
• remove duplicated common zh replacement tables from the LongBridge runtime
• bump QuantPlatformKit to the merged localization helper commit

Testing

• PYTHONPATH=/tmp/qsl_worktrees/QuantPlatformKit-i18n/src:/tmp/qsl_worktrees/LongBridgePlatform-i18n /tmp/qsl_worktrees/CharlesSchwabPlatform-cash/.venv/bin/python -m pytest tests/test_rebalance_service.py tests/test_notifications.py -q