Fix spain schema: wrap past_feat_dynamic_real (FLOAT[] -> FLOAT[][])

Fix gfc12_load schema: wrap past_feat_dynamic_real (FLOAT[] -> FLOAT[][])

Fix pdb schema: wrap past_feat_dynamic_real (FLOAT[] -> FLOAT[][])

Fix gfc17_load schema: wrap past_feat_dynamic_real (FLOAT[] -> FLOAT[][])

Fix pdb schema: wrap target in array (FLOAT[] -> FLOAT[][])

Fix spain schema: wrap target in array (FLOAT[] -> FLOAT[][])

Fix gfc17_load schema: wrap target in array (FLOAT[] -> FLOAT[][])

Fix gfc12_load schema: wrap target in array (FLOAT[] -> FLOAT[][])

Add spain dataset

Add gfc17_load dataset

Add pdb dataset

Add gfc12_load dataset

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