fix(ui): update hotkeys for viewer

invokeai/frontend/web/public/locales/en.json

@@ -589,13 +589,9 @@
             "desc": "Upscale the current image",
             "title": "Upscale"
         },
-        "backToEditor": {
-            "desc": "Closes the Image Viewer and shows the Editor View (Text to Image tab only)",
-            "title": "Back to Editor"
-        },
-        "openImageViewer": {
-            "desc": "Opens the Image Viewer (Text to Image tab only)",
-            "title": "Open Image Viewer"
+        "toggleViewer": {
+            "desc": "Switches between the Image Viewer and workspace for the current tab.",
+            "title": "Toggle Image Viewer"
         }
     },
     "metadata": {

invokeai/frontend/web/src/features/system/components/HotkeysModal/useHotkeyData.ts

@@ -141,14 +141,9 @@ export const useHotkeyData = (): HotkeyGroup[] => {
           hotkeys: [['Arrow Right']],
         },
         {
-          title: t('hotkeys.openImageViewer.title'),
-          desc: t('hotkeys.openImageViewer.desc'),
-          hotkeys: [['I']],
-        },
-        {
-          title: t('hotkeys.backToEditor.title'),
-          desc: t('hotkeys.backToEditor.desc'),
-          hotkeys: [['Esc']],
+          title: t('hotkeys.toggleViewer.title'),
+          desc: t('hotkeys.toggleViewer.desc'),
+          hotkeys: [['Z']],
         },
       ],
     }),