Issue #3400018 by mstrelan, xjm: Add declare(strict_types=1) to all Functional JavaScript tests

(cherry picked from commit 5247e642)

core/modules/action/tests/src/FunctionalJavascript/ActionFormAjaxTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\action\FunctionalJavascript;
 
 use Drupal\Core\Url;

core/modules/announcements_feed/tests/src/FunctionalJavascript/AccessAnnouncementTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\announcements_feed\FunctionalJavascript;
 
 use Drupal\Tests\system\FunctionalJavascript\OffCanvasTestBase;

core/modules/announcements_feed/tests/src/FunctionalJavascript/AlertsJsonFeedTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\announcements_feed\FunctionalJavascript;
 
 use Drupal\Tests\system\FunctionalJavascript\OffCanvasTestBase;

core/modules/big_pipe/tests/src/FunctionalJavascript/BigPipePreviewTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\big_pipe\FunctionalJavascript;
 
 use Drupal\FunctionalJavascriptTests\WebDriverTestBase;

core/modules/big_pipe/tests/src/FunctionalJavascript/BigPipeRegressionTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\big_pipe\FunctionalJavascript;
 
 use Drupal\big_pipe\Render\BigPipe;

core/modules/block/tests/src/FunctionalJavascript/BlockAddTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\block\FunctionalJavascript;
 
 use Drupal\FunctionalJavascriptTests\WebDriverTestBase;

core/modules/block/tests/src/FunctionalJavascript/BlockContextualLinksTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\block\FunctionalJavascript;
 
 use Drupal\FunctionalJavascriptTests\WebDriverTestBase;

core/modules/block/tests/src/FunctionalJavascript/BlockDragTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\block\FunctionalJavascript;
 
 use Drupal\FunctionalJavascriptTests\WebDriverTestBase;

core/modules/block/tests/src/FunctionalJavascript/BlockFilterTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\block\FunctionalJavascript;
 
 use Behat\Mink\Element\NodeElement;

core/modules/book/tests/src/FunctionalJavascript/BookJavascriptTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\book\FunctionalJavascript;
 
 use Behat\Mink\Exception\ExpectationException;

core/modules/ckeditor5/tests/src/FunctionalJavascript/AdminUiTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\ckeditor5\FunctionalJavascript;
 
 // cspell:ignore sourceediting

core/modules/ckeditor5/tests/src/FunctionalJavascript/CKEditor5AllowedTagsTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\ckeditor5\FunctionalJavascript;
 
 use Drupal\Core\Entity\Entity\EntityViewMode;

core/modules/ckeditor5/tests/src/FunctionalJavascript/CKEditor5DialogTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\ckeditor5\FunctionalJavascript;
 
 use Drupal\ckeditor5\Plugin\Editor\CKEditor5;

core/modules/ckeditor5/tests/src/FunctionalJavascript/CKEditor5FragmentLinkTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\ckeditor5\FunctionalJavascript;
 
 use Drupal\Core\Entity\Entity\EntityFormDisplay;

core/modules/ckeditor5/tests/src/FunctionalJavascript/CKEditor5OffCanvasTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\ckeditor5\FunctionalJavascript;
 
 /**

core/modules/ckeditor5/tests/src/FunctionalJavascript/CKEditor5ReadOnlyModeTest.php

 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\ckeditor5\FunctionalJavascript;
 

core/modules/ckeditor5/tests/src/FunctionalJavascript/CKEditor5Test.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\ckeditor5\FunctionalJavascript;
 
 use Drupal\ckeditor5\Plugin\Editor\CKEditor5;

core/modules/ckeditor5/tests/src/FunctionalJavascript/CKEditor5TestBase.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\ckeditor5\FunctionalJavascript;
 
 use Behat\Mink\Element\TraversableElement;

core/modules/ckeditor5/tests/src/FunctionalJavascript/CKEditor5ToolbarTest.php

 <?php
 
-declare(strict_types = 1);
+declare(strict_types=1);
 
 namespace Drupal\Tests\ckeditor5\FunctionalJavascript;
 

core/modules/ckeditor5/tests/src/FunctionalJavascript/CKEditorStylesheetsWarningTest.php

 <?php
 
+declare(strict_types=1);
+
 namespace Drupal\Tests\ckeditor5\FunctionalJavascript;
 
 // cspell:ignore subtheming