Examples: Use ESM version of lottie.

[Mugen87]

Fixed #24762.

Description

Uses the ESM version of lottie.

[Mugen87]

Note: I have deleted examples/js/libs/lottie_canvas.js since the ESM version adds bodymovin to the window object for backwards compatibility. So examples/js users have to include the ESM version, too. Apart from that, they have to define the global lottie variable like so: const lottie = bodymovin; before using the loader. bodymovin is no explicit export of the lottie module.

[elalish]

I'm new to dynamic imports, but I'm trying to dynamically load lottie_canvas since it's huge. Three.js is bundled into model-viewer.js, but if I do a regular import of LottieLoader.js, then lottie_canvas gets bundled too. If I try to dynamically load LottieLoader, then it errors with TypeError: Failed to resolve module specifier "three".

Does this need to be updated to the system that e.g. DRACOLoader uses? Or is there a way to make this work as is?

[mrdoob]

Does this need to be updated to the system that e.g. DRACOLoader uses?

That may be best yes!