Nit-pick: 3D View propellers also turning when not armed

[MaEtUgR]

I just analyzed my example log captured in SITL using the super useful 3D view "slow motion": https://logs.px4.io/3d?log=3ce2cbbf-68d6-48c3-b2a6-aaaef1fca020

I saw that the propellers are already turning in the beginning even though the vehicle wasn't armed. It's not severe at all and maybe not even an issue, I just wanted to report the case which maybe wasn't tested before.

[bkueng]

The model animation is automatic and done by Cesium (I'll need to look into it, how customizable that behavior is). It's started whenever the log replay is running, and not tied to the arming state at the moment. But you are right, it should be.