Fix(Dialog): set height limit of 35% to DialogHeader

Author: francinelucca

packages/react/src/Dialog/Dialog.module.css

@@ -214,6 +214,7 @@
 
 .Header {
   z-index: 1;
+  max-height: 35vh;
   padding: var(--base-size-8);
   /* stylelint-disable-next-line primer/box-shadow */
   box-shadow: 0 1px 0 var(--borderColor-default);