update unreleased

Author: emma-boardman

UNRELEASED.md

@@ -14,6 +14,7 @@ Use [the changelog guidelines](https://git.io/polaris-changelog-guidelines) to f
 - Added `requiredIndicator` prop to `Label`, `Labelled`, `Select` and `TextField` ([#4119](https://github.com/Shopify/polaris-react/pull/4119))
 - Add `small` prop to `Modal` so that width can be decreased to 380px ([#4177](https://github.com/Shopify/polaris-react/pull/4177))
 - Add `status` prop to `IndexTable.Row` to allow table rows to specify background colors([#4146](https://github.com/Shopify/polaris-react/pull/4146))
+- Added `useIsomorphicLayout` ([#4173](https://github.com/Shopify/polaris-react/pull/4173))
 - Prevent `KeypressListener` attaching/detaching on every render ([#4173](https://github.com/Shopify/polaris-react/pull/4173))
 
 ### Bug fixes
@@ -31,8 +32,6 @@ Use [the changelog guidelines](https://git.io/polaris-changelog-guidelines) to f
 
 ### Dependency upgrades
 
-- Added `@shopify/react-hooks` v1.13.0 ([#4173](https://github.com/Shopify/polaris-react/pull/4173))
-
 ### Code quality
 
 ### Deprecations