Test: Terminal inactive selection background

[Tyriar]

Refs: #156985

• macOS @isidorn
• linux @alexr00
• windows @dbaeumer

Complexity: 2

Authors: @meganrogge @Tyriar

Create Issue

---

An inaction (unfocused) selection background color is now supported in the terminal, similar to the editor. Please test:

• The feature works with all values of terminal.integrated.gpuAcceleration
• The selection background color works as expected (same as in the editor) on all built-in themes
• Setting terminal.inactiveSelectionBackground in workbench.colorCustomizations works with both opaque (#rrggbb) and transparent (#rrggbbaa) colors

[alexr00]

Interestingly, my terminal selection is lost when I change themes. Not sure if that's a bug though.

[Tyriar]

@alexr00 good polish change we could make 👍