TextEmbedder only handles ModernBertForMaskedLM, not ModernBertModel embedding checkpoints

[amgix-dev]

Problem

TextEmbedder::from_pretrained_hf in rust/src/embeddings/embed/text.rs only routes ModernBertForMaskedLM to ModernBertEmbedder:

"ModernBertForMaskedLM" => Ok(Self::ModernBert(Box::new(ModernBertEmbedder::new(...)?))),

Many embedding models on Hugging Face use architecture ModernBertModel, not ModernBertForMaskedLM, for example:

• ibm-granite/granite-embedding-97m-multilingual-r2
• Alibaba-NLP/gte-modernbert-base
• nomic-ai/modernbert-embed-base

Calling TextEmbedder::from_pretrained_hf with these models fails with "Model not supported", even though ModernBertEmbedder::new(model_id, ...) works when used directly.

Expected behavior

Also match ModernBertModel and construct ModernBertEmbedder the same way.

Workaround

Instantiate ModernBertEmbedder directly instead of going through TextEmbedder.

[mikemikimike]

Implemented in PR #218.\n\n- Changed: TextEmbedder::from_pretrained_hf now accepts ModernBertModel alongside ModernBertForMaskedLM.\n- Tests: cargo test -p embed_anything supports_modernbert_embedding_architectures --lib (1 passed).\n- Validation: git diff --check passed; the changed Rust file was formatted with rustfmt.