[GUI Editor] Fix overflows on left panel (#12315)
[GUI Editor] Fix overflows on left panel (#12315)

* add overflow:scroll to left panels

* switch to auto

Co-authored-by: Raanan Weber <59bd0a3ff43b32849b319e645d4798d8a5d1e889@raananweber.com>
sebavan/Babylon.js,BabylonJS/Babylon.js,RaananW/Babylon.js,BabylonJS/Babylon.js,RaananW/Babylon.js,RaananW/Babylon.js,sebavan/Babylon.js,sebavan/Babylon.js,BabylonJS/Babylon.js