Deprecate the entered prop on the Transition component (#3089)

* mark `entered` as deprecated

- We keep the `enterTo` classes once the `enter` transition finishes
- We keep the `leaveTo` classes once the `leave` transition finishes

* update changelog

packages/@headlessui-react/CHANGELOG.md

@@ -29,6 +29,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 - Attempt form submission when pressing `Enter` on the `<Listbox.Button />` component ([#2972](https://github.com/tailwindlabs/headlessui/pull/2972))
 - Make the `Combobox` component `nullable` by default ([#3064](https://github.com/tailwindlabs/headlessui/pull/3064))
+- Deprecate the `entered` prop on the `Transition` component ([#3089](https://github.com/tailwindlabs/headlessui/pull/3089))
 
 ### Added
 

packages/@headlessui-react/src/components/transition/transition.tsx

@@ -66,6 +66,9 @@ export interface TransitionClasses {
   enter?: string
   enterFrom?: string
   enterTo?: string
+  /**
+   * @deprecated The `enterTo` and `leaveTo` classes stay applied after the transition has finished.
+   */
   entered?: string
   leave?: string
   leaveFrom?: string