Update hungarian translation for teams, table of contents features, and new admin labels. (#3701)

# Description of Changes

This pull request updates the Hungarian localization file
`messages_hu_HU.properties` for the `stirling-pdf` project. The changes
involve translating previously untranslated or English text into
Hungarian, ensuring consistency across the application. The most
important changes are grouped below by theme.

### Admin Tools and User Management
* Translated `account.adminTitle` and `account.adminNotif` to Hungarian
for administrator tools and privileges.
* Updated various `adminUserSettings` keys, such as `teams`,
`manageTeams`, and `teamName`, to their Hungarian equivalents.

### Team Management
* Translated team-related keys like `team.addUser`, `team.userAdded`,
and `team.internalTeamNotAccessible` to Hungarian, covering actions like
adding users, moving users, and managing internal teams.

### Table of Contents Feature
* Translated keys related to editing the table of contents in PDF
documents, such as `home.editTableOfContents.title`,
`editTableOfContents.addBookmark`, and `editTableOfContents.desc.1`, to
Hungarian.

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## Checklist

### General

- [x] I have read the [Contribution
Guidelines](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/CONTRIBUTING.md)
- [x] I have read the [Stirling-PDF Developer
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md)
(if applicable)
- [ ] I have read the [How to add new languages to
Stirling-PDF](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md)
(if applicable)
- [x] I have performed a self-review of my own code
- [x] My changes generate no new warnings

### Documentation

- [ ] I have updated relevant docs on [Stirling-PDF's doc
repo](https://github.com/Stirling-Tools/Stirling-Tools.github.io/blob/main/docs/)
(if functionality has heavily changed)
- [ ] I have read the section [Add New Translation
Tags](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/HowToAddNewLanguage.md#add-new-translation-tags)
(for new translation tags only)

### UI Changes (if applicable)

- [ ] Screenshots or videos demonstrating the UI changes are attached
(e.g., as comments or direct attachments in the PR)

### Testing (if applicable)

- [x] I have tested my changes locally. Refer to the [Testing
Guide](https://github.com/Stirling-Tools/Stirling-PDF/blob/main/DeveloperGuide.md#6-testing)
for more details.