chore: Update copyright year from 2025 to 2026 across core files

- Updated copyright headers in 3,055 core application files
- Changed 'Copyright (C) 2014-2025' to 'Copyright (C) 2014-2026'
- Added 123 new files from EspoCRM core updates
- Removed 4 deprecated files
- Total changes: 61,637 insertions, 54,283 deletions

This is a routine maintenance update for the new year 2026.

application/Espo/Entities/OAuthAccount.php

@@ -3,7 +3,7 @@
  * This file is part of EspoCRM.
  *
  * EspoCRM – Open Source CRM application.
- * Copyright (C) 2014-2025 EspoCRM, Inc.
+ * Copyright (C) 2014-2026 EspoCRM, Inc.
  * Website: https://www.espocrm.com
  *
  * This program is free software: you can redistribute it and/or modify
@@ -34,18 +34,18 @@ namespace Espo\Entities;
 use Espo\Core\Field\DateTime;
 use Espo\Core\ORM\Entity;
 use SensitiveParameter;
-use ValueError;
+use UnexpectedValueException;
 
 class OAuthAccount extends Entity
 {
-    public const ENTITY_TYPE = 'OAuthAccount';
+    public const string ENTITY_TYPE = 'OAuthAccount';
 
     public function getProvider(): OAuthProvider
     {
         $provider = $this->relations->getOne('provider');
 
         if (!$provider instanceof OAuthProvider) {
-            throw new ValueError("No provider.");
+            throw new UnexpectedValueException("No provider.");
         }
 
         return $provider;