test(gfql): amplify #982 native edge alias coverage - #1015

Summary

• verify the exact AST row select cannot reference edge alias properties after traversal #982 native AST repro on top of latest master
• add native-chain regressions for undirected, reverse, null-propagation, parallel-edge, self-loop, and direct rows(binding_ops=...) edge-alias shapes
• update the local plan with current branch state and focused verification results

Findings

• the historical runtime bug described in AST row select cannot reference edge alias properties after traversal #982 is already fixed on current master
• the fix appears to have arrived as part of the [FEA] GFQL bindings_table (row bindings) from chain using Yannakakis prune #880 bindings-table work
• this PR is therefore a verification and regression-coverage branch, not a runtime-behavior change
• adjacent native bindings-table behaviors now have explicit coverage for reverse traversal, missing edge props, duplicate edges, self-loops, direct binding-op parity, and named-multihop rejection

Validation

• python3.12 -B -m pytest -q graphistry/tests/test_compute_chain.py -k "ChainBindingsTable and (undirected_edge_alias_projection or reverse_edge_alias_projection or missing_edge_property_returns_null or parallel_edges_preserve_distinct_rows or undirected_self_loop_duplicates_both_directions or direct_rows_binding_ops_supports_undirected_edge_alias_projection or direct_rows_binding_ops_rejects_named_multihop_edge_alias or edge_alias or missing_column or reverse_edge)"
• python3.12 -B -m pytest -q graphistry/tests/compute/gfql/cypher/test_lowering.py -k "multi_alias_return_with_edge_alias_property or multi_alias_undirected_incoming_edge_returns_peer_not_seed or multi_alias_undirected_outgoing_edge_returns_peer or multi_alias_undirected_bidirectional_edges or multi_alias_undirected_multiple_edges_same_nodes or multi_alias_undirected_self_loop or test_string_cypher_failfast_rejects_unsupported_multihop_row_bindings"

Closes #982