Add google/flan-t5-xxl to eval queue

google/flan-t5-xxl_eval_request_False_float32_Original.json

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+{"model": "google/flan-t5-xxl", "base_model": "", "revision": "main", "private": false, "precision": "float32", "weight_type": "Original", "status": "PENDING", "submitted_time": "2024-03-12T18:59:01Z", "model_type": "pretrained", "likes": 1074, "params": 11.267, "license": "apache-2.0"}