Omni's Custom Items 1.1.23 - Omen Ball direct animation routing

Visual model and textures are carried forward unchanged from 1.1.22.
Gameplay/shiny logic is carried forward unchanged.

Animation fix:
- Removes the Omen custom poser and custom animation-group selection path.
- Omen keeps Cobblemon's standard poke_ball poser/model pipeline.
- Omen-only animation entries are embedded in the normal poke_ball animation group using unique names.
- A model-local mixin detects the Omen-only omen_marker bone and routes animation requests at PosableModel.bedrock/bedrockStateful.
- Toss: stock `throw` request -> `omen_throw_ace`.
- Shut, bounce, critical, capture, Bob1/2/3/6 -> their exact Omen entries.
- Cobblemon Bob4/Bob5 requests are redirected visually to allowed Omen Bob1/Bob2, so Bob4/Bob5 animations never play.
- Send-out resources are unchanged.

This avoids relying on entity timing, getGroup overrides, or a custom poser.
