Issue #3455912 by quietone: Fix spelling for 10 words used in tests

core/misc/cspell/dictionary.txt

core/modules/block/tests/src/Functional/BlockUiTest.php

...content/tests/src/Functional/BlockContentCreationTest.php

...n/tests/src/Functional/ConfigTranslationUiModulesTest.php

...es/layout_builder_test/src/Plugin/Block/TestAjaxBlock.php

..._builder/tests/src/Functional/LayoutBuilderBlocksTest.php

..._builder/tests/src/FunctionalJavascript/AjaxBlockTest.php

...sts/src/FunctionalJavascript/ContentPreviewToggleTest.php

...er/tests/src/FunctionalJavascript/ContextualLinksTest.php

...tionalJavascript/LayoutBuilderDisableInteractionsTest.php

...er/tests/src/FunctionalJavascript/LayoutBuilderUiTest.php

...lder/tests/src/FunctionalJavascript/MoveBlockFormTest.php

...stem/tests/modules/ajax_forms_test/ajax_forms_test.module

.../Functional/UpdateSystem/UpdatePathTestBaseFilledTest.php

core/modules/system/tests/src/Kernel/Mail/MailTest.php

...ts/Drupal/FunctionalJavascriptTests/Ajax/CommandsTest.php

...ests/Drupal/FunctionalJavascriptTests/Ajax/DialogTest.php

core/tests/Drupal/Tests/Core/Mail/MailManagerTest.php