fix: Show version number with card loading spinner (#1825)

- Closes #1818

**Why add this?**: A repeated pattern is that an issue is fixed in the
card, a new build is released and users will incorrectly believe it's
not yet fixed due to their browser caching the old code. This results in
wasting their time, and my time.

**But it's obnoxious!**: I'm pretty sensitive to this (hence adding
these messages!), so let me know how terrible you find it. You can
disable it with:

```yaml
performance:
  features:
    card_loading_indicator: false
```

src/localize/languages/pt-PT.json

@@ -435,6 +435,7 @@
     "performance": {
       "features": {
         "animated_progress_indicator": "Animação na barra de progresso",
+        "card_loading_indicator": "",
         "editor_label": "Editor de etiquetas",
         "max_simultaneous_engine_requests": "",
         "media_chunk_size": "Tamanho do ficheiro"
@@ -511,8 +512,8 @@
       "theme": {
         "themes": {
           "dark": "",
-          "ha": "",
           "editor_label": "",
+          "ha": "",
           "light": "",
           "traditional": ""
         }