Simulator does not update to V2 board when blocks are used

[microbit-mark]

We need to change to the V2 board when the power blocks are used. MakeCode team supplied this answer on how to implement:

We switch to v2 sim based off the v2 exclusive parts; e.g. this parts attribute on a microphone block: https://github.com/microsoft/pxt-microbit/blob/master/libs/microphone/microphone.cpp#L78

Here’s where they are defined:

https://github.com/microsoft/pxt-microbit/blob/master/sim/dalboard.ts#L138

so //% parts=”v2” should be fine