fix: Astra DB Graph Vector Store langchain 0.3.x

[erichare]

This pull request updates the construct of the Graph Vector Store to pass parameters correctly in the event of missing metadata exclusion or other params, to maintain compatibility with langchain 0.3.x

[codspeed-hq]

CodSpeed Performance Report

Merging #4568 will degrade performances by 92.43%

_{Comparing fix-astradb-graph-vs (5c1f45f) with main (151c369)}

Summary

❌ 3 regressions
✅ 12 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	main	fix-astradb-graph-vs	Change
❌	test_build_flow_from_request_data	408.4 ms	5,395.4 ms	-92.43%
❌	test_successful_run_with_input_type_any	127.6 ms	205.2 ms	-37.81%
❌	test_successful_run_with_input_type_text	182.7 ms	205.1 ms	-10.92%