[fix][client] Fix race condition between isDuplicate() and flushAsync() method in PersistentAcknowledgmentsGroupingTracker due to incorrect use Netty Recycler

[oneby-wang]

Fixes apache#25145

Motivation

See apache#25145 (comment).

Due to the use of Netty Recycler, a ConcurrentBitSetRecyclable instance may still be used after being recycled. However, recycling clears all bits, which causes the isDuplicate() method to always return true.

Modifications

Replace ConcurrentBitSetRecyclable with ConcurrentBitSet, ensure that ackSet is only cleared when the ackXxx method is invoked.

As apache#24766 suggested, we should stop using Netty Recycler in new code. Since using Netty Recycler is kind of error prone way here, I think we should remove it.

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