v2.1: Add not unique leader discovery (backport of #3546) #3658
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Problem
Currently, TpuClient next API allows to get only unique future leaders. For example, if the leader schedule is
[L1, L1, L1, L1, L2, L2, L2, L2, L1, L1, L1, L1]
, it will return[L1, L2]
. While for the internal logic oftpu-client-next
it is desirable to get[L1, L2, L1]
instead.Summary of Changes
This is an automatic backport of pull request #3546 done by [Mergify](https://mergify.com).