DialogPrimitive - Change tabindex of Body to -1 (HDS-4905) (#3316)

Co-authored-by: Lee White <[email protected]>

Author: KristinLBradley

.changeset/heavy-impalas-call.md

@@ -0,0 +1,7 @@
+---
+"@hashicorp/design-system-components": patch
+---
+
+<!-- START components/dialog-primitive -->
+`DialogPrimitive` - changed `DialogPrimitiveBody` z-index from 0 to -1 to keep it focusable without showing visible focus styles.
+<!-- END -->

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="0" ...attributes>
+<div class="hds-dialog-primitive__body {{@contextualClass}}" tabindex="-1" ...attributes>
   {{yield}}
 </div>