fix: Fixed Inconsistant capitalization in blank window locales, b=closes #12009, c=kbs

locales/en-US/browser/browser/zen-menubar.ftl

@@ -23,4 +23,4 @@ zen-menubar-appearance-dark =
     .label = Dark
 
 zen-menubar-new-unsynced-window =
-    .label = New Blank Window
+    .label = New blank window

prefs/zen/window-sync.yaml

@@ -2,9 +2,6 @@
 # License, v. 2.0. If a copy of the MPL was not distributed with this
 # file, You can obtain one at http://mozilla.org/MPL/2.0/.
 
-- name: zen.window-sync.enabled
-  value: true
-
 - name: zen.window-sync.log
   value: false
 

src/zen/kbs/ZenKeyboardShortcuts.mjs

@@ -1109,7 +1109,7 @@ class nsZenKeyboardShortcutsVersioner {
 
     if (version < 15) {
       // Migrate from version 13 to 14
-      // Add shortcut to open a new unsynced window: Default accelt+option+N (Ctrl+Alt+N on non-macOS)
+      // Add shortcut to open a new unsynced window: Default accelt+shift+N
       data.push(
         new KeyShortcut(
           "zen-new-unsynced-window",

src/zen/sessionstore/ZenWindowSync.sys.mjs

@@ -17,7 +17,7 @@ ChromeUtils.defineESModuleGetters(lazy, {
   setTimeout: "resource://gre/modules/Timer.sys.mjs",
 });
 
-XPCOMUtils.defineLazyPreferenceGetter(lazy, "gWindowSyncEnabled", "zen.window-sync.enabled");
+XPCOMUtils.defineLazyPreferenceGetter(lazy, "gWindowSyncEnabled", "zen.window-sync.enabled", true);
 XPCOMUtils.defineLazyPreferenceGetter(lazy, "gShouldLog", "zen.window-sync.log", true);
 
 const OBSERVING = ["browser-window-before-show", "sessionstore-windows-restored"];