The UV Index (UVI) unit is incorrectly displayed as "lux" in the MakeCode interface.

[DeXin64]

🐞 Describe the bug

The UV Index (UVI) unit is incorrectly displayed as "lux" in the MakeCode interface. This is misleading because "lux" is a unit for visible light intensity, while the UV Index is a dimensionless index used to represent the strength of ultraviolet radiation from the sun.

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🔁 To Reproduce

Steps to reproduce the behavior:

1. Go to https://makecode.microbit.org/
2. Create or open a project that uses a UV sensor or UV Index block
3. Run the simulation or connect a real micro:bit device with a UV sensor
4. Observe the sensor output display and notice that the UV Index value is shown with the unit "lux"

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✅ Expected behavior

The UV Index should be displayed without the unit "lux", or with a label such as "UV Index" or "UVI". Since it is a standardized index based on erythemal-weighted UV radiation, it does not have a physical unit like lux.

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📸 Screenshots

If applicable, add screenshots to help explain your problem.
(Example: A screen showing “UV Index: 6 lux”)

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💻 Desktop (please complete the following information):

• OS: Windows 10 /
• Browser: Edge
• Version: e.g.125.0.0.0

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📝 Additional context

• The issue may occur in a third-party extension or built-in environment sensor module.
• The UV Index is an internationally recognized measure of UV radiation intensity, typically ranging from 0 to 11+.
• Lux is a unit used for measuring visible light brightness and is not suitable for representing UV radiation levels.
• Reference sources:
  • World Health Organization – Global Solar UV Index
  • US EPA – UV Index Scale

[thomasjball]

@DeXin64 - please submit this issue to https://github.com/jacdac/jacdac