chore(dialog,modal): creates changeset

Author: marissahuysentruyt

.changeset/modern-chairs-sit.md

@@ -0,0 +1,17 @@
+---
+"@spectrum-css/dialog": major
+"@spectrum-css/modal": minor
+---
+
+S2 Takeover dialog
+
+This is the migration for the fullscreen/fullscreenTakeover dialog stories (in Figma, these stories are called "takeover dialog"). The Divider component support was removed in S2 standard dialog migration ([#2860](https://github.com/adobe/spectrum-css/pull/2860)). New and updated tokens are in place to update dialog corner rounding, some font sizes, spacing/padding, and maximum/minimum widths. Fullscreen/fullscreenTakeover dialogs do not support additional header or footer content (in comparison to the standard dialog).
+
+_New Mods_
+`--mod-takeover-dialog-spacing-grid-padding`
+`--mod-takeover-dialog-spacing-header-gap`
+`--mod-takeover-dialog-title-font-size`
+
+Modal updates
+
+- Modal component now uses the updated margin (window-to-edge) found in the takeover dialog design specs.