`dataset.mode` in subsets is shared.

[gabrieletijunaityte]

When splitting datasets, they are just views (subsets) of one original dataset object and thus sharing all parameter, this renders self.mode useless.

aether/src/data/base_datamodule.py

Lines 245 to 256 in 9659b01

	if split_data_from_inds:
	self.data_train = torch.utils.data.Subset(self.dataset, train_indices)
	self.data_train.dataset.mode = "train"
	self.data_val = torch.utils.data.Subset(self.dataset, val_indices)
	self.data_val.dataset.mode = "val"
	if test_indices is not None:
	self.data_test = torch.utils.data.Subset(self.dataset, test_indices)
	self.data_test.dataset.mode = "test"
	else:
	self.data_test = None