feat: separate into "Download All" and "Update All" in font manager (#1955)

## Summary

* **What is the goal of this PR?**  
Separate the font manager's combined `Download / Update All` action into
separate `Download All` and `Update All` rows

* **What changes are included?**  
- Updated multiple i18n translation files to add `STR_UPDATE_ALL` and
adjust `STR_DOWNLOAD_ALL` text.
- Added separate handlers: `downloadAll()` for fonts that have been
installed and `updateAll()` for fonts with updates.
  - `Download All` and `Update All` are only shown when applicable.

---

### AI Usage

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please be transparent about their usage as it
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Did you use AI tools to help write this code? _**PARTIALLY**_

lib/I18n/translations/polish.yaml

@@ -323,7 +323,8 @@ STR_SD_CARD_FULL: "Za mało pamięci na karcie SD"
 STR_FILES_LABEL: "Pliki: "
 STR_SIZE_LABEL: "Rozmiar: "
 STR_REDOWNLOAD: "Re-download"
-STR_DOWNLOAD_ALL: "Pobierz / Uaktualnij wszystkie"
+STR_DOWNLOAD_ALL: "Pobierz wszystkie"
+STR_UPDATE_ALL: "Uaktualnij wszystkie"
 STR_ALL_FONTS_INSTALLED: "Wszystkie czcionki zainstalowane!"
 STR_UPDATE_AVAILABLE: "Uaktualnij"
 STR_CRASH_TITLE: "Awaria systemu"