changed back tabindex to 0 in DialogPrimitiveBody

Author: didoo

packages/components/src/components/hds/dialog-primitive/body.hbs

@@ -2,6 +2,6 @@
   Copyright (c) HashiCorp, Inc.
   SPDX-License-Identifier: MPL-2.0
 }}
-<div class="hds-dialog-primitive__body {{@contextualClass}}" tabindex="-1" ...attributes>
+<div class="hds-dialog-primitive__body {{@contextualClass}}" tabindex="0" ...attributes>
   {{yield}}
 </div>