ethclient: add back 'data' member in call objects

[zero-mover]

Supports calling some parameter fields that are notinput butdata

[zero-mover]

end

[fjl]

So here is the thing, we changed it to use input on purpose. Accepting data on the server side was already deprecated for 5 years (since #15640), yet we kept it to not break people's apps. We just had to switch to actually using input on the client side at some point though, and that point was #28078 (1 year ago)

[fjl]

So if the chain you are interacting with does not support input instead of data in calls, we are sorry, and you should update the server instead.