Add error for indicating Mashal/Unmarshaling failures in ICA

[DimitrisJim]

Summary

Found in #4161 (comment) and issues of this kind might be opened for other places while #3778 is getting worked on.

In short, we seem to be using ErrUnknownDataType liberally in ica even in cases where it doesn't make much sense (i.e marshalling/unmarhalling errors).

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[chandiniv1]

@DimitrisJim can I work on this issue?

[crodriguezvega]

@DimitrisJim can I work on this issue?

Yes, @chandiniv1. Thank you!

[chandiniv1]

@crodriguezvega Is this issue about returning the actual error instead of the custom error (ErrUnknownDataType) during marshalling and unmarshalling failures, or is there something else involved?