fix ike_hparams loading#699
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This PR fixes multimodal post-merge compatibility issues around Qwen-VL utilities and IKE hparams loading.
Fixed IKEMultimodalHyperParams.from_hparams() so compact Qwen-VL IKE configs can load correctly.
- Missing legacy multimodal fields are filled during hparams loading.
- name defaults to model_name.
- model_parallel, use_chat_template, and template are explicitly supported.
- Unknown hparams keys now raise a clear ValueError.
Validation
Verified hparams loading for hparams/IKE/qwen3vl_4b.yaml.
Ran real-model multimodal editing smoke tests with Qwen3-VL-4B:
Ran real-model multimodal editing smoke tests with Qwen3.5-9B: