fix(HeaderToggle): updated border radius in high contrast (#730)

Co-authored-by: Eric Olkowski <[email protected]>

Author: thatblindgeye

packages/module/src/ChatbotHeader/ChatbotHeader.scss

@@ -91,6 +91,10 @@
   align-items: center;
   justify-content: center;
 
+  &::before {
+    border-radius: inherit;
+  }
+
   .pf-v6-c-button__icon,
   .pf-v6-c-menu-toggle__icon,
   .pf-v6-c-icon__content {