Test for #8017

• Windows @rebornix
• macOS @chrisdias
• Linux @joaomoreno

Complexity: 2

Overview
We've updated all of our product icons to use our new outline style:

Please go through each area of the product and verify that thew new icons appear properly, and that there are no old icons remaining. Please ensure that you disable extensions (--disable-extensions) when running this as other extensions haven't updated their icons yet and can be confusing when testing this. Note that Octicons are not covered in this and those appear in the Status bar and Quick pick. Please cover the following the areas:

• Activity bar
• Explorer
• Search
• SCM
• Debug
• Extensions
• Panels
• Notifications
• Settings
• Keyboard Shortcuts
• Running Extensions