micro:bit makecode-editor simulator behaves differently from real micro:bit (v2) in the function Math.pow() with floats as exponents.

Describe the bug
The microbit simulators behaviour differs from the microbit behaviour when using Math.pow(a,b) if the exponent (b) is not an integer.

The result of Math.pow(2, 3.5) is 8 on the micro:bit (it only seems to use the integer part (3) instead of (3.5).
Math.pow(2, 3.5) is 11.31370849898476 in the simulator.

To Reproduce
Steps to reproduce the behavior:

1. run the following code from the makecode.microbit.com javascript editor in the simulator and on a real microbit device.
   '''basic.showNumber(2 ** 3.5)'''
2. observe the number displayed on the micro:bit.
3. The real (V2) microbit device will display 8 whereas the simulator will display 11.3137...

Expected behavior
The simulator and microbit must produce the same result.

Either the simulator also uses integers only for the exponent and the result is 8 also in the simulator or
the microbit Math.pow() function has an issue and needs to be fixed to accept float values as well for the exponent part.

• Which version of the micro:bit is this relevant to [ EG V1.3, V1.5, V2.0, or specify it's not hardware related ]

V2

Desktop (please complete the following information):
The simulator and microbit behaviour does not seem to be os dependent

• OS: MacOS 12 and LInux (Ubuntu Mate 20.04)
• Browser Chrome
• Version 94.0.4606.81 (on Ubuntu)

Additional context
None that seems relevant.

Start with the micro:bit JavaScript editor simulator and reproduce Math.pow(2, 3.5), then compare its result with the V2 device behavior described here. The issue names no source file or test; determine which behavior is intended and make the simulator and device agree, with regression coverage for the reported float exponent case.