[wip]PartitionStatistics support totalBuckets#6964

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jianguotian wants to merge 4 commits intoapache:masterfrom

jianguotian:add_bucket_cnt_partition_stats

Commits on Jan 8, 2026

[wip][core]PartitionStatistics support bucket count
mingfeng
committed
fix fail tests
mingfeng
committed
use raw totalBuckets
mingfeng
committed
pypaimon support total_buckets
mingfeng
committed