Update Zen Browser styles for dark mode compatibility

src/browser/base/content/nsContextMenu-js.patch

@@ -0,0 +1,16 @@
+diff --git a/browser/base/content/nsContextMenu.js b/browser/base/content/nsContextMenu.js
+index b5c8dd44daaab18397cf01d0ef9f5288f5113925..f59b494dc287edaa148f726902244224330d81c5 100644
+--- a/browser/base/content/nsContextMenu.js
++++ b/browser/base/content/nsContextMenu.js
+@@ -1047,6 +1047,11 @@ class nsContextMenu {
+         !this.isSecureAboutPage()
+     );
+ 
++    this.showItem(
++      "context-zenAddToWebPanel",
++      this.onLink && !this.onMailtoLink && !this.onTelLink
++    );
++
+     let copyLinkSeparator = document.getElementById("context-sep-copylink");
+     // Show "Copy Link", "Copy" and "Copy Clean Link" with no divider, and "copy link" and "Send link to Device" with no divider between.
+     // Other cases will show a divider.