chore: Update zen-browser.js and related files

src/browser/app/profile/zen-browser.js

@@ -75,6 +75,7 @@ pref('zen.keyboard.shortcuts.enabled', true);
 pref('zen.keyboard.shortcuts', ""); // Empty string means default shortcuts
 pref('zen.keyboard.shortcuts.disable-firefox', false);
 pref('zen.tabs.dim-pending', true);
+pref('zen.themes.updated-value-observer', false);
 
 // Pref to enable the new profiles (TODO: Check this out!)
 //pref("browser.profiles.enabled", true);

src/browser/base/content/zen-assets.inc.xhtml

@@ -25,6 +25,8 @@
 <!-- Scripts used all over the browser -->
 <script type="text/javascript">
 window.addEventListener("DOMContentLoaded", async () => {
+  // Theme importer always needs to be loaded first
+  Services.scriptloader.loadSubScript("chrome://browser/content/zen-components/ZenThemesImporter.mjs");
   Services.scriptloader.loadSubScript("chrome://browser/content/ZenUIManager.mjs");
   Services.scriptloader.loadSubScript("chrome://browser/content/zen-components/ZenSidebarManager.mjs");
   Services.scriptloader.loadSubScript("chrome://browser/content/zen-components/ZenWorkspaces.mjs");

src/browser/base/content/zen-assets.jar.inc.mn

@@ -9,7 +9,8 @@
         content/browser/zen-components/ZenProfileDialogUI.mjs   (content/zen-components/src/ZenProfileDialogUI.mjs)
         content/browser/zen-components/ZenKeyboardShortcuts.mjs (content/zen-components/src/ZenKeyboardShortcuts.mjs)
         content/browser/zen-components/ZenThemeBuilder.mjs      (content/zen-components/src/ZenThemeBuilder.mjs)
-        
+        content/browser/zen-components/ZenThemesImporter.mjs    (content/zen-components/src/ZenThemesImporter.mjs)
+
         content/browser/zen-styles/zen-theme.css                (content/zen-styles/zen-theme.css)
         content/browser/zen-styles/zen-buttons.css              (content/zen-styles/zen-buttons.css)
         content/browser/zen-styles/zen-tabs.css                 (content/zen-styles/zen-tabs.css)