fix: initialize visible_database_patterns in remaining initializers

crates/dbx-core/src/schema/normalization.rs

@@ -159,6 +159,7 @@ mod tests {
             database: Some("demo".to_string()),
             default_schema: None,
             visible_databases: None,
+            visible_database_patterns: None,
             visible_schemas: None,
             show_system_schemas: false,
             attached_databases: Vec::new(),