🌐 Sync Translations + Update README Progress Table (#3713)

### Description of Changes

This Pull Request was automatically generated to synchronize updates to
translation files and documentation. Below are the details of the
changes made:

#### **1. Synchronization of Translation Files**
- Updated translation files (`messages_*.properties`) to reflect changes
in the reference file `messages_en_GB.properties`.
- Ensured consistency and synchronization across all supported language
files.
- Highlighted any missing or incomplete translations.

#### **2. Update README.md**
- Generated the translation progress table in `README.md`.
- Added a summary of the current translation status for all supported
languages.
- Included up-to-date statistics on translation coverage.

#### **Why these changes are necessary**
- Keeps translation files aligned with the latest reference updates.
- Ensures the documentation reflects the current translation progress.

---

Auto-generated by [create-pull-request][1].

[1]: https://github.com/peter-evans/create-pull-request

Co-authored-by: stirlingbot[bot] <195170888+stirlingbot[bot]@users.noreply.github.com>

README.md

@@ -152,7 +152,7 @@ Stirling-PDF currently supports 40 languages!
 | Swedish (Svenska) (sv_SE)                    | ![72%](https://geps.dev/progress/72)   |
 | Thai (ไทย) (th_TH)                           | ![65%](https://geps.dev/progress/65)   |
 | Tibetan (བོད་ཡིག་) (bo_CN)                     | ![0%](https://geps.dev/progress/0) |
-| Traditional Chinese (繁體中文) (zh_TW)        | ![83%](https://geps.dev/progress/83)   |
+| Traditional Chinese (繁體中文) (zh_TW)        | ![80%](https://geps.dev/progress/80)   |
 | Turkish (Türkçe) (tr_TR)                     | ![81%](https://geps.dev/progress/81)   |
 | Ukrainian (Українська) (uk_UA)               | ![78%](https://geps.dev/progress/78)   |
 | Vietnamese (Tiếng Việt) (vi_VN)              | ![63%](https://geps.dev/progress/63)   |