Modify tailwind imports in a way that biome can handle.

Author: nedtwigg

browser-extension/src/entrypoints/popup/style.css

@@ -1,4 +1,5 @@
-@import "tailwindcss" source("../../..");
+@import "tailwindcss";
+@source "../../..";
 /* Popup window frame styles */
 :root {
   --popup-width: 600px;