Scrollbar in Settings Activity Not Themed

[Prakhar-Agarwal-byte]

Describe the issue Currently, the scrollbar in the Settings Activity is not themed. It should get themed according to light and dark mode.

To Reproduce or Feature details Steps to reproduce the behavior:

1. Go to Settings
2. Scroll the list
3. See that the scrollbar is in the default android theme and not according to the app theme.

Current behavior

See the grey colored scrollbar (default android theme)

https://user-images.githubusercontent.com/17739006/106428450-00b69a00-648f-11eb-8376-72c80f6519a7.mp4

Expected behavior

See the themed scrollbar which changes according to light and dark theme

Dark theme

https://user-images.githubusercontent.com/17739006/106428864-9e11ce00-648f-11eb-8c0a-a3c71da1a9eb.mp4

Light theme

https://user-images.githubusercontent.com/17739006/106429033-dd401f00-648f-11eb-9f0f-2661d3585237.mp4

Smartphone (please complete as much of the following information as possible):

• Device: Pixel 4a
• OS: Android 10

Additional context Resolving this issue will improve the consistency of the app theme.