Update startProcessingDataset to accept formatted data from caller Formik components

[nozomione]

Context

Currently, the startProcessingDataset method in the useDatasetManager hook accepts the values output from a user-submitted Formik form. It then filters the given values to extract the necessary download option keys for the API request to start processing the dataset.

Problem or idea

We want to move the responsibility of formatting form values to the caller components (using Formik forms) before passing them to startProcessingDataset, and simplify the implementation of this hook method.

Solution or next step

1. Update the caller components to handle the formatting of the data before passing it to startProcessingDataset
2. Clean up the formatting logic from startProcessingDataset