Change User table primary key name

export const auth = betterAuth({
    database: prismaAdapter(prisma, {
        provider: "mysql",
    }),
    emailAndPassword: {
        enabled: true
    },
    socialProviders: {
        google: {
            clientId: process.env.OAUTH_GOOGLE_ID,
            clientSecret: process.env.OAUTH_GOOGLE_SECRET,
        }
    },
    user: {
        modelName: "users",
        fields: {
            id: "user_pid",
            email: "email",
            name: "username",
            emailVerified: "emailVerified",
            image: "image",
        },
    },
})