added required parameter to the edge query results;

[OxidBurn]

Description

Add required edge property defaults to ensure consistency in graph operations.

Related Issues

Fixes issues where missing edge properties caused downstream errors in knowledge graph operations.

Changes Made

• Added required parameter checking to get_edge and get_edges_batch methods
• Implemented default values for critical edge properties (weight, source_id, description, keywords)
• Added warning logs when defaults are applied for better debugging and visibility

Checklist

• Changes tested locally
• Code reviewed
• Documentation updated (if necessary)
• Unit tests