Function order_book_requires_backend_full_depth 

pub fn order_book_requires_backend_full_depth(
    info: &CachedSecurityInfo,
    qr: &QotRightData,
) -> bool

C++ IsHKSF: HK 股票 + HK SF 权限要求 backend 全档摆盘。

Ref:

• FutuOpenD/Src/APIServer/APIServer_Inner_API.cpp:900-913
• FutuOpenD/Src/APIServer/Business/Quote/QotSubscribe.cpp:1282-1286