Users now can make a back transition from the current step state.
- Added a `BackButton` component to `spreadsheet-import` in order to use
it within the step state components.
- Used the prebuilt `prevStep` from `useStepBar` and passed it as a prop
to the `Uploadflow` to get the previous state as activestep.
- Added a `previousState` to set the previous state with the required
key data.
- Added a `handleOnBack` function in `Uploadflow` to set the correct
state and call the `prevStep` function to make the transition.
- Added a callback function `onBack` and passed it as props to each step
state component.
fixes: #5564https://github.com/twentyhq/twenty/assets/140178357/be7e1a0a-0fb8-41f2-a207-dfc3208ca6f0
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Co-authored-by: Thomas Trompette <thomas.trompette@sfr.fr>