Fixes unintended breaking change made by I84ed21641c44b2f65ebe.
ApiQueryUserInfo::getBlockInfo() is restoed as a hard deprecated stub.
This renames the method in the new ApiBlockInfoTrait to
getBlockDetails.
Depends-On: I9f40666a31bd4af50762c197c2ce5bf089a5e68c
Change-Id: If47a93878f87d69800e5f305404c22528dac5e94