\Drupal::state()-get()/set() to Drupal::keyValue()->get()/set()

Closes #3496319

core/modules/comment/tests/src/Functional/CommentPreviewTest.php

@@ -45,7 +45,7 @@ public function testCommentPreview(): void {
 
     // Test escaping of the username on the preview form.
     \Drupal::service('module_installer')->install(['user_hooks_test']);
-    \Drupal::state()->set('user_hooks_test_user_format_name_alter', TRUE);
+    \Drupal::keyValue('user_hooks_test')->set('user_format_name_alter', TRUE);
     $edit = [];
     $edit['subject[0][value]'] = $this->randomMachineName(8);
     $edit['comment_body[0][value]'] = $this->randomMachineName(16);
@@ -53,7 +53,7 @@ public function testCommentPreview(): void {
     $this->submitForm($edit, 'Preview');
     $this->assertSession()->assertEscaped('<em>' . $this->webUser->id() . '</em>');
 
-    \Drupal::state()->set('user_hooks_test_user_format_name_alter_safe', TRUE);
+    \Drupal::keyValue('user_hooks_test')->set('user_format_name_alter_safe', TRUE);
     $this->drupalGet('node/' . $this->node->id());
     $this->submitForm($edit, 'Preview');
     $this->assertInstanceOf(MarkupInterface::class, $this->webUser->getDisplayName());