Issue #2293825 by sun: Fixed Various test classes do not have a "Test" suffix.

...comment/src/Tests/Views/DefaultViewRecentCommentsTest.php

...odules/language/tests/src/Menu/LanguageLocalTasksTest.php

...ules/locale/src/Tests/LocaleJavascriptTranslationTest.php

.../src/Tests/d6/MigrateCommentVariableEntityDisplayTest.php

.../Tests/d6/MigrateCommentVariableEntityFormDisplayTest.php

...e_drupal/src/Tests/d6/MigrateCommentVariableFieldTest.php

...rupal/src/Tests/d6/MigrateCommentVariableInstanceTest.php

...odules/migrate_drupal/src/Tests/d6/MigrateDrupal6Test.php

core/modules/node/src/Tests/NodeFieldMultilingualTest.php

core/modules/node/src/Tests/NodeRevisionsAllTest.php

...odules/node/src/Tests/Views/RevisionRelationshipsTest.php

.../modules/system/src/Tests/Theme/EnginePhpTemplateTest.php

core/modules/system/src/Tests/Theme/EngineTwigTest.php

...modules/system/src/Tests/Update/InvalidUpdateHookTest.php

core/modules/system/src/Tests/Update/UpdatesWith7xTest.php

...my/src/Tests/Views/RelationshipRepresentativeNodeTest.php

core/modules/user/src/Tests/UserBlocksTest.php

...er/src/Tests/Views/RelationshipRepresentativeNodeTest.php

core/modules/views_ui/src/Tests/DisplayCRUDTest.php

core/modules/views_ui/src/Tests/DisplayPathTest.php