Php – When a class extends another class and also implements an interface, shouldn't it override all the abstract methods of the parent class and interface?

As far as I know,
when a class extending another class, It’s should override all abstract methods of parent class and It can also override non-abstract methods
And also when a class implementing an interface, It’s should override all of the parent interface methods
but I’ve seen a Laravel project that didn’t do this

This is the parent interface:

<?php

interface MustVerifyEmail
{
    /**
     * Determine if the user has verified their email address.
     *
     * @return bool
     */
    public function hasVerifiedEmail();

    /**
     * Mark the given user's email as verified.
     *
     * @return bool
     */
    public function markEmailAsVerified();

    /**
     * Send the email verification notification.
     *
     * @return void
     */
    public function sendEmailVerificationNotification();

    /**
     * Get the email address that should be used for verification.
     *
     * @return string
     */
    public function getEmailForVerification();
}

this is the parent class:

<?php

class User extends Model implements
    AuthenticatableContract,
    AuthorizableContract,
    CanResetPasswordContract
{
    use Authenticatable, Authorizable, CanResetPassword, MustVerifyEmail;
}

and this is the child class:

<?php

use IlluminateContractsAuthMustVerifyEmail;
use IlluminateFoundationAuthUser as Authenticatable;

class User extends Authenticatable implements MustVerifyEmail
{
    /**
     * The attributes that are mass assignable.
     *
     * @var array<int, string>
     */
    protected $fillable = [
        'name',
        'email',
        'password',
    ];

    /**
     * The attributes that should be hidden for serialization.
     *
     * @var array<int, string>
     */
    protected $hidden = [
        'password',
    ];

    /**
     * The attributes that should be cast.
     *
     * @var array<string, string>
     */
    protected $casts = [
        'email_verified_at' => 'datetime',
        'password' => 'hashed',
    ];

    public function activeCode()
    {
        return //...
    }

    public function hasTwoFactor($key)
    {
        return //...
    }

    public function isTwoFactorAuthEnabled()
    {
        return //...
    }
}

How did this happen?