i18n workflow improvements and tweaks (#22586)

* mobile button spacing

* prevent console warning about div being descendant of p

* ensure consistent spacing

* add missing i18n keys

* i18n fixes

- add missing translations
- fix dot notation keys

* use plain string

* add missing key

* add i18next-cli commands for extraction and status

also add false positives removal for several keys

* add i18n key check step to PR workflow

* formatting

web/public/locales/en/views/events.json

@@ -15,8 +15,10 @@
       "description": "Review items can only be created for a camera when recordings are enabled for that camera."
     }
   },
-  "timeline": "Timeline",
-  "timeline.aria": "Select timeline",
+  "timeline": {
+    "label": "Timeline",
+    "aria": "Select timeline"
+  },
   "zoomIn": "Zoom In",
   "zoomOut": "Zoom Out",
   "events": {