Use sessions search

[prasmussen15]

[!IMPORTANT] Refactor database query execution to use sessions and rename query parameters for consistency across multiple files.

• Database Query Execution:
  • Refactor to use session.run() for executing queries in search_utils.py, community_operations.py, and graph_data_operations.py.
  • Replace execute_query() with session.run() in functions like get_mentioned_nodes(), get_communities_by_nodes(), edge_fulltext_search(), and others.
• Parameter Naming:
  • Rename _database to database_ in edges.py, nodes.py, search_utils.py, community_operations.py, and graph_data_operations.py for consistency.
• Miscellaneous:
  • Minor adjustments in query handling and logging across the affected files.

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