[GLUTEN-6887][VL] Daily Update Velox Version (2026_08_25)

[GlutenPerfBot]

Upstream Velox's New Commits:

191da8896 by Xiaoxuan, perf(nimble): Fast-path uncompressed chunk stripping
dbf7937fe by Wechar Yu, refactor: Minor normalize gtest names for dwio
fbc6742d9 by Hongze Zhang, docs: Add blog "Native Delta Statistics with Velox Task Barriers"
cb8a941cc by Xiaoxuan, perf(nimble): Reuse encoding slice scratch buffers (18660)
360af1a8c by Guilherme Kunigami, fix(presto-serializer): Deserialize nested OPAQUE columns (18532)
9005b49dd by Ke, feat(nimble): Verify writer metadata in fuzzers (18545)
e1e73a07a by oerling, fix(torchwave): Three unrelated crash and corruption bugs
adb4f5cc3 by Rui Mo, test: Enable dynamic filter pushdown for long decimal join keys
704b70369 by Jimmy Lu, fix(nimble): Keep nulls in dictionary reads without AVX2 (18621)
7bdf24200 by Maria Basmanova, docs: Document VELOX_ENABLE_BACKWARD_COMPATIBILITY
80fc30b38 by Krishna Pai, fix(nimble): Make the shared dictionary export build and pass checks
a9c90e024 by Jimmy Lu, fix(function): Fix LIKE crash on truncated UTF-8 patterns (18622) (18622)
fc329bf3f by Krishna Pai, feat(nimble): Add shared dictionary encoding and writer (18640)
33a594c8e by Joe Abraham, fix(hive): Test split filters on all partition keys and constants
e4811a2f7 by Devavret Makkar, fix(cuDF): Avoid copying single cuDF concat batches in CudfBatchConcat
29357c4fe by Maria Basmanova, fix(tests): Keep an explicit ROWS window frame (18639)
683854b30 by XiaoDu, misc(nimble): Make DeltaBlock reject unsorted input as incompatible (18631) (18631)
787f964a6 by Xiaoxuan, fix(nimble): Build writer reclaimer in OSS
6a99eaada by Xiaoxuan, feat(nimble): Add external dictionary build tool and library (18634)
b7199fb2e by Xiaoxuan, feat(nimble): Add shared dictionary config (18636)
ae3f7b1b2 by Xiaoxuan, refactor(nimble): Rename file features to properties (18616)
4d16851ec by Xiaoxuan, feat(nimble): Add shared dictionary catalog reader
eb9af27c7 by Xiaoxuan, feat(nimble): Add shared dictionary catalog schema (18620)
6ced766a5 by Amit Dutta, fix(kll): Reject unsafe sketch sizes
52bb657fa by Krishna Pai, fix(nimble): Drop read-only PFOR from dispatch fuzzer test
15d719e24 by oerling, feat(torchwave): Common-subexpression elimination (18623)
417d2275e by Krishna Pai, feat(nimble): Merge Writer and Deserializer with fbcode (18625)
2c661fc83 by Krishna Pai, feat(nimble): Sync Nimble from fbcode after the move into Velox (18614)
c2a52d021 by PRASHANT GOLASH, perf: Pack DirectCoalescedLoad buffers into one shared allocation (17949)
23062d1bd by Shrinidhi Joshi, feat(exchange): Add materialized exchange implementation - operator and output buffer (18579)

velox_branch: https://github.com/IBM/velox/commits/dft-2026_08_25

Related issue: #6887