Pin LongBridge runtime quote limit fix

[Pigbibi]

Summary

• pin QuantPlatformKit to 4a98277 with LongBridge batched quote reads, 301606 retry, and sub-1-share order guard
• restore LongBridge default sizing to whole shares unless fractional sizing is explicitly enabled
• refresh LongBridge runtime profile expectations/docs for the current strategy catalog

Tests

• /home/ubuntu/Projects/LongBridgePlatform/.venv/bin/python -m pytest tests/test_runtime_config_support.py tests/test_runtime_broker_adapters.py
• /home/ubuntu/Projects/LongBridgePlatform/.venv/bin/python -m ruff check runtime_config_support.py tests/test_runtime_config_support.py application/runtime_broker_adapters.py