Line highlight in Visual Studio 2022 contains an outline instead of being flat

[Binaryify]

Describe the bug
Observe the selected line in Visual Studio 2022 and notice it contains a border around it.

To Reproduce
Steps to reproduce the behavior:

1. Open Visual Studio 2022
2. Ensure you're using the OneDark Pro theme
3. Observe the selected line background and border

Expected behavior
As per Visual Studio Code, no outline should be present on the selected line, it should just be a solid background colour.

Screenshots & Example Code
VS Code

Visual Studio 2022

Desktop (please complete the following information):

• OS: PC / Windows 11 Pro
• Visual Studio Version: 2022 Community
• VSCODE Version: 1.68.0
• Theme Version: 3.15.0 (VS Code), 1.3.3 (VS 2022)

Additional context
N/A

Copied from Binaryify/OneDark-Pro#750