Main tree menu fail defautl language to italian instead of english

[wlorenzetti]

Checklist

• I've searched through the existing issues and this bug has never been reported before

Subject of the issue

When a translation for a specific language does not exist, instead of using the English version as the default, Italian is used.
This only applies to the left menu of the G3W-Admin administration interface.

Steps to reproduce

1. Go to g3w-admin interface and switch language to German for example.
2. Look at left main tree menu and check that the default language is Italian.

Environment

• g3w-admin: 3.9.client_dependencies_v3.11.3-20250211162414
• g3w-client: 3.11.2
  • editing: 3.9.0
  • qplotly: 3.9.0
  • qtimeseries: 3.9.0
  • qprocessing: undefined
• browser: Firefox 136.0
• operating system: Linux 64-bit

Link to your project

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Additional info

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