feat: Show the correct possition for new panels, b=no-bug, c=common

src/browser/actors/EncryptedMediaParent-sys-mjs.patch

@@ -0,0 +1,12 @@
+diff --git a/browser/actors/EncryptedMediaParent.sys.mjs b/browser/actors/EncryptedMediaParent.sys.mjs
+index 9d3d3db9761cf5b2fde1f70992e82b1733241863..3dc64dc395d5237bf2c290cb8588cf467fb8729a 100644
+--- a/browser/actors/EncryptedMediaParent.sys.mjs
++++ b/browser/actors/EncryptedMediaParent.sys.mjs
+@@ -200,6 +200,7 @@ export class EncryptedMediaParent extends JSWindowActorParent {
+         "drmContentPlaying",
+         aBrowser
+       )
++      || true // zen: We have some issues with this currently, so never show it
+     ) {
+       return;
+     }

src/browser/base/content/zen-panels/site-data.inc

@@ -5,8 +5,7 @@
 <panel id="zen-unified-site-data-panel"
         role="group"
         type="arrow"
-        noautofocus="true"
-        position="bottomright topright">
+        noautofocus="true">
   <panelmultiview mainViewId="unified-extensions-view">
 # We'll keep the view with this name/id in order to prevent
 # any sort of future issues we may have if firefox decides

src/zen/common/ZenUIManager.mjs

@@ -659,7 +659,7 @@ var gZenUIManager = {
     if (anchor?.closest('#zen-sidebar-top-buttons')) {
       block = 'topleft';
     }
-    if (gZenVerticalTabsManager._hasSetSingleToolbar && !gZenVerticalTabsManager._prefsRightSide) {
+    if (gZenVerticalTabsManager._hasSetSingleToolbar && gZenVerticalTabsManager._prefsRightSide) {
       block = 'bottomright';
       inline = 'topright';
     }