Returned result of layer_property (layer, 'type') is dependent of UI language #65009

What is the bug or the crash?

Running layer_property (layer, 'type') in a QGIS expression returns a different string result depending on the language selected in QGIS.

This make expression very prone to breakage, eg: I am developing an expression on a machine in American English, and my users experience bugs because their machine are in another language.

Example:

• In English layer_property (layer, 'type') returns 'Vector'
• In French layer_property (layer, 'type') returns 'Vecteur'

Steps to reproduce the issue

• Go to Settings > Options
  • In the General tab: check "Override System Locale"
  • Set the field "User Interface Translation" to "American English"
• Restart QGIS for the option to take effect
• Create a new project
• Create a layer, eg: Layer > Create Layer > Create Shapefile layer
• Open the expression builder, eg: Edit > Select > Select Features by expression
• Set the text to layer_property (@layer, 'type'), this should output 'Vector'
• Repeat these steps but select "français" instead of "American English" in the Settings
• layer_property (@layer, 'type') should output 'Vecteur'

Versions

Supported QGIS version

• I'm running a supported QGIS version according to the roadmap.

New profile

• I tried with a new QGIS profile

Additional context

No response