GHSA-x783-xp3g-mqhp: PraisonAI: SQLiteConversationStore didn't validate table_prefix when constructing SQL queries

The table_prefix configuration value is directly used to construct SQL table identifiers without validation.

If an attacker controls this value, they can manipulate SQL query structure, leading to unauthorized data access (e.g., reading internal SQLite tables such as sqlite_master) and tampering with query results.