Fix inline code being rendered as block in the panel description (#32405)

public/sass/components/_panel_header.scss

@@ -181,10 +181,13 @@ $panel-header-no-title-zindex: 1;
 
   code {
     white-space: normal;
-    display: block;
     word-wrap: break-word;
   }
 
+  pre > code {
+    display: block;
+  }
+
   .panel-info-corner-links {
     list-style: none;
     padding-left: 0;