fix: blockcache compute problem

[Z-G-H1]

#3168 share-block-cache 为yes时，多个 Column Family 共享同一个 block cache，但在统计 block cache usage 时，代码仍然对每个 CF 分别查询然后累加，导致同一个 block cache 的使用量被计算了多次。 修复前，hash,list,set 的计算均为两倍，zset为三倍： 修复后这些数据结构的不会再被计算多次： 添加测试：

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[Z-G-H1]

修复 CI 的部分去掉吧，一个 PR 做一件事

Done.

[Issues-translate-bot]

Bot detected the issue body's language is not English, translate it automatically.

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Get rid of the part about fixing CI, one PR does one thing

Done.