Almost any game can now be played by lesser-used controllers thanks to the new feature added by SteamVR, which automatically enables rebinding. - UploadVR
SteamVR Adds Automatic Rebinding So Lesser Used Controllers Can Play Almost Any Game
SteamVR 1.26 update introduces automatic controller rebinding for OpenXR titles. This feature automatically creates and configures bindings for controllers that are not supported by a game, making it easier for users to play VR games without manually setting up input schemes. The update also includes other improvements and bug fixes. For more information and the full changelog, please visit the source.
Source: https://www.uploadvr.com/steamvr-automatic-controller-rebinding-update/