Invalid drizzle schema for `defaultValue` of additionalField with type `string[]`

export const auth = betterAuth({
  database: drizzleAdapter(db, {
    provider: "pg", // or "mysql", "sqlite"
    schema: authschema,
  }),

  // ...

  user: {
    modelName: "usersTable",
    additionalFields: {
      roles: { type: "string[]", defaultValue: ["guest"], input: false },
      description: { type: "string" },
      address: { type: "string" },
    },
  },
});

import {
  pgTable,
  text,
  timestamp,
  boolean,
  integer,
} from "drizzle-orm/pg-core";

export const usersTable = pgTable("users_table", {
  id: text("id").primaryKey(),
  name: text("name").notNull(),
  email: text("email").notNull().unique(),
  emailVerified: boolean("email_verified")
    .$defaultFn(() => false)
    .notNull(),
  image: text("image"),
  createdAt: timestamp("created_at")
    .$defaultFn(() => /* @__PURE__ */ new Date())
    .notNull(),
  updatedAt: timestamp("updated_at")
    .$defaultFn(() => /* @__PURE__ */ new Date())
    .notNull(),
  roles: text("roles").array().default(guest), // should be ["guest"] instead
  description: text("description"),
  address: text("address"),
});

// ... other schema