fix: Silence false positive sequelize class fields warning (#13224)

sequelize-strict-attributes defines per-instance accessors for attributes
omitted from a query's selection, which trips Sequelize's public class field
detection. The removed `Fix` decorator used to suppress this per model; do it
once on the base model instead.

server/models/base/Model.ts

@@ -50,6 +50,13 @@ class Model<
   TModelAttributes extends object = any,
   TCreationAttributes extends object = TModelAttributes,
 > extends SequelizeModel<TModelAttributes, TCreationAttributes> {
+  /**
+   * Disables Sequelize's public class field detection, which reports a false positive for the
+   * per-instance accessors that sequelize-strict-attributes installs on attributes omitted from
+   * a query's selection.
+   */
+  static _overwrittenAttributesChecked = true;
+
   /**
    * The namespace to use for events - defaults to the table name if none is provided.
    */