ESQL: Fix and unmute BlockHashTests.test3BytesRefs() (#127830)

Fixes #127825
Fixes #127826

After merging #127582, there was a subtle change that made calls to `add(..., IntVectorBlock)` to directly call `add(..., IntVector)`. This triggered a code path in the test, throwing a NPE.

Also, updated some autogenerated files that were merged before my other branch, and weren't updated

Author: ivancea

muted-tests.yml

@@ -438,12 +438,6 @@ tests:
 - class: org.elasticsearch.xpack.remotecluster.RemoteClusterSecurityFcActionAuthorizationIT
   method: testIndicesPrivilegesAreEnforcedForCcrRestoreSessionActions
   issue: https://github.com/elastic/elasticsearch/issues/127782
-- class: org.elasticsearch.compute.aggregation.blockhash.BlockHashTests
-  method: test3BytesRefs {forcePackedHash=true}
-  issue: https://github.com/elastic/elasticsearch/issues/127825
-- class: org.elasticsearch.compute.aggregation.blockhash.BlockHashTests
-  method: test3BytesRefs {forcePackedHash=false}
-  issue: https://github.com/elastic/elasticsearch/issues/127826
 - class: org.elasticsearch.compute.aggregation.FilteredGroupingAggregatorFunctionTests
   method: testSimpleCircuitBreaking
   issue: https://github.com/elastic/elasticsearch/issues/127833