fix: DH-20680: Reindexing filters to support barriers

[lbooker42]

ReindexingFilters are treated as "serial", but the existing code did not handle barriers properly when a RIF was part of a list of filters. This was due to the independent execution of subsets of filters preceding or following the RIF.

This code tracks the encountered filter barriers and provides them to subsequent filter executions so the respected barrier requirements can be met during execution.

[github-actions]

No docs changes detected for 052b956

[Copilot]

Pull request overview

This PR adds support for barriers in reindexing filters by:

• Adding a new ExtractReindexingFilters visitor class to identify reindexing filters within complex filter structures
• Updating QueryTable.whereInternal() to properly track and propagate declared barriers when splitting filter execution around reindexing filters
• Adding comprehensive test coverage for both sorted and unsorted clock filters with various barrier configurations

The key changes ensure that when filters are split for reindexing, barriers declared in earlier filters are properly propagated to later filters, maintaining correct execution ordering.

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File	Description
ExtractReindexingFilters.java	New visitor class that extracts reindexing filters from where filter hierarchies, unwrapping barrier and serial wrappers
QueryTable.java	Refactored reindexing filter handling to track and propagate declared barriers across filter subsets; consolidated filter imports
TestClockFilters.java	Added comprehensive test cases validating barrier behavior with sorted and unsorted clock filters in various configurations

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