fix: tween doesn't use the duration so it fallbacks to 0 and finishes immediately

[leanmendoza]

this effect is evident in the switchable-platform scene, when you press the button and the platform goes instantaneously to the end also:

• feat: update last audio source spec
• fix: some mesh renderer disappear because the depth-test (material)
• fix: with scene-radius==0 when changing parcel position, it shows the loading screen and call moveTo