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

.github/workflows/pull_request.yml

@@ -27,6 +27,9 @@ jobs:
       - name: Lint
         run: npm run lint
         working-directory: ./web
+      - name: Check i18n keys
+        run: npm run i18n:extract:ci
+        working-directory: ./web
 
   web_test:
     name: Web - Test