Fix: missing validation for tids when

[passwordwasforgotten]

index's deduplicate is on

In the '_bt_validate_tid' method, the IndexTuple 'ituple' is not deformed when processing the posting tuple, resulting in missing validation for certain TIDs.

Fixes #ISSUE_Number

What does this PR do?

Type of Change

• [1 ] Bug fix (non-breaking change)
• [0] New feature (non-breaking change)
• [0 ] Breaking change (fix or feature with breaking changes)
• [0] Documentation update

Breaking Changes

Test Plan

• [ ] Unit tests added/updated
• [ ] Integration tests added/updated
• [ ] Passed make installcheck
• [ ] Passed make -C src/test installcheck-cbdb-parallel

Impact

Performance:

User-facing changes:

Dependencies:

Checklist

• [ ] Followed contribution guide
• [ ] Added/updated documentation
• [ ] Reviewed code for security implications
• [ ] Requested review from cloudberry committers

Additional Context

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