example `manual_material` crashes: `ErasedMeshPipelineKey` has wrong type

[mockersf]

Bevy version and features

• main, didn't bisect but likely since More fully type erase all pbr types from specialization  #22408

What you did

cargo run --example manual_material

What went wrong

thread '<unnamed>' (5861490) panicked at crates/bevy_material/src/key.rs:28:9:
assertion `left == right` failed: ErasedMeshPipelineKey::downcast called with wrong type
  left: TypeId(0x41223169ff28813ba79b7268a2a968d9)
 right: TypeId(0x376d2b8466b7ce39cd740deb2433cfc0)
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
Encountered a panic in system `bevy_pbr::material::specialize_material_meshes`!

[Zeophlite]

Just checked, this bug is caused by the linked PR (commit 7f59d21ddb )

Setting mesh_pipeline_key_bits in examples/shader_advanced/manual_material.rs prevents the crash, but leaves with a black screen

let mut properties = MaterialProperties {
    mesh_pipeline_key_bits: ErasedMeshPipelineKey::new(MeshPipelineKey::empty()),
..

[Zeophlite]

Should be closed by #22611 but I'm away from my laptop so can't confirm 😅