Upgrade t-digest from 3.2 to 3.3 with error rate fix#18103

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xiangfu0 wants to merge 3 commits intomasterfrom

claude/crazy-wilbur

Commits on Apr 9, 2026

Upgrade t-digest from 3.2 to 3.3 with error rate fix

xiangfu0
and
claude
committed
Add production-behavior accuracy test for TDigest aggregator

xiangfu0
and
claude
committed
Increase default TDigest compression for star-tree from 100 to 500

xiangfu0
and
claude
committed