Fix #1272: forward reentry carry through trailing WITH narrowing

[lmeyerov]

Summary

• fix Cypher/GFQL: forward scalar carry columns through trailing WITH narrowing in reentry suffix (IC5 sub-residual A) #1272 IC5 sub-A runtime carry forwarding for collect/unwind reentry shapes with trailing WITH d, bid
• treat hidden reentry-property references as non-participating in one-source alias guard counting while explicitly promoting hidden-carry stages onto bindings-row lowering
• convert the two Cypher/GFQL: forward scalar carry columns through trailing WITH narrowing in reentry suffix (IC5 sub-residual A) #1272 failfast tests into positive execution assertions and add a changelog note

Validation

• python -m pytest -q graphistry/tests/compute/gfql/cypher/test_lowering.py -k "post_with_match_collect_unwind_match_final_with or post_with_match_collect_unwind_match_with_carried_scalar"
• python -m pytest -q graphistry/tests/compute/gfql/cypher/test_lowering.py -k "post_with_match_collect_unwind_match"

Notes

• planning + review artifacts were kept local under plans/1272-worker-b/ per repo workflow