active sidebar doesnt show focused item (#3090)

Author: siddharthkp

packages/common/src/themes/codesandbox-black.js

@@ -151,14 +151,14 @@ const colors = {
     errorBorder: tokens.reds[500],
   },
   list: {
-    activeSelectionBackground: tokens.grays[700],
-    activeSelectionForeground: tokens.white,
     dropBackground: tokens.grays[700],
     highlightForeground: tokens.blues[300],
     hoverBackground: tokens.grays[500],
     focusBackground: tokens.grays[500],
-    inactiveSelectionBackground: null,
-    inactiveSelectionForeground: null,
+    activeSelectionBackground: tokens.grays[500],
+    activeSelectionForeground: tokens.white,
+    inactiveSelectionBackground: tokens.grays[500],
+    inactiveSelectionForeground: tokens.white,
     warningForeground: tokens.yellow,
     errorForeground: tokens.reds[500],
     hoverForeground: null,