Prepare changelog for v3.81.0

Author: RiotRobot

CHANGELOG.md

@@ -1,5 +1,5 @@
-Changes in [3.81.0-rc.1](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v3.81.0-rc.1) (2023-09-19)
-===============================================================================================================
+Changes in [3.81.0](https://github.com/matrix-org/matrix-react-sdk/releases/tag/v3.81.0) (2023-09-26)
+=====================================================================================================
 
 ## ✨ Features
  * Make video & voice call buttons pin conference widget if unpinned ([\#11576](https://github.com/matrix-org/matrix-react-sdk/pull/11576)). Fixes vector-im/customer-retainer#72.
@@ -10,6 +10,7 @@ Changes in [3.81.0-rc.1](https://github.com/matrix-org/matrix-react-sdk/releases
  * Allow setting knock room directory visibility ([\#11529](https://github.com/matrix-org/matrix-react-sdk/pull/11529)). Contributed by @charlynguyen.
 
 ## 🐛 Bug Fixes
+ * Revert "Fix regression around FacePile with overflow (#11527)" ([\#11634](https://github.com/matrix-org/matrix-react-sdk/pull/11634)). Fixes vector-im/element-web#26209.
  * Escape placeholder before injecting it into the style ([\#11607](https://github.com/matrix-org/matrix-react-sdk/pull/11607)).
  * Move ViewUser action callback to RoomView ([\#11495](https://github.com/matrix-org/matrix-react-sdk/pull/11495)). Fixes vector-im/element-web#26040.
  * Fix room timeline search toggling behaviour edge case ([\#11605](https://github.com/matrix-org/matrix-react-sdk/pull/11605)). Fixes vector-im/element-web#26105.