src/vs/editor/browser/viewParts/currentLineHighlight/currentLineHighlight.ts/AbstractLineHighlightOverlay/onFocusChanged
class AbstractLineHighlightOverlay:	public override onFocusChanged(e: viewEvents.ViewFocusChangedEvent): boolean {
		if (!this._renderLineHighlightOnlyWhenFocus) {
			return false;
		}

		this._focused = e.isFocused;
		return true;
	}