Fix the styling of the accessibility dialog

It’s not perfect but comes close to the appearance of our dialogs.

See https://www.woltlab.com/community/thread/307927-ckeditor-hilfefenster-schrift-im-dunklen-farbschema-kaum-lesbar-layout-schief/

wcfsetup/install/files/style/ui/ckeditor.scss

@@ -662,3 +662,25 @@ html.iOS {
  display: none !important;
  }
 }
+
+/* Accessiblity Dialog */
+.ck.ck-dialog {
+ --ck-accessibility-help-dialog-border-color: var(--wcfContentBorderInner);
+ --ck-color-dialog-form-header-border: var(--wcfContentBorderInner);
+ --ck-accessibility-help-dialog-code-background-color: transparent;
+
+ background-color: var(--wcfContentBackground);
+ border-radius: var(--wcfBorderRadiusContainer);
+ box-shadow: var(--wcfBoxShadow);
+ color: var(--wcfContentText);
+
+ dl:not(.plain) {
+ &:not(:first-child) {
+ margin-top: 0;
+ }
+
+ > :is(dt:not(:empty), dd:not(:last-child)) {
+ margin-bottom: 0;
+ }
+ }
+}