[Bug]: add scrolling to the joint dialog box displayed when using the 'gs view'

[vybhav-ibr]

Bug Description

My robot has 48 joints and i cant change their positions of all the joints using the slider as they are out of view

Steps to Reproduce

$ gs view /path/to/robot.urdf

Expected Behavior

all joint be displayed in the window

Screenshots/Videos

No response

Relevant log output

Environment

• OS: [e.g. Ubuntu 24.04, Windows 11 24H2]
• GPU/CPU [e.g. A100, RTX 4090, M3pr, Intel I9-9900k, Ryzen 5900x] (N/A if no GPU/CPU)
• GPU-driver version (N/A if no GPU)
• CUDA / CUDA-toolkit version (N/A if non-Nvidia)

Release version or Commit ID

v.0.3.1

Additional Context

No response