Fix calculated data overwrite issue

[rufus87]

The calculated step configuration gets overwritten by the original step configuration. This small PR fixes it.

[kamranahmedse]

Thank you for the PR but what does this solve? Overriding it this way is intentional, configuration set in popover is supposed to override the global configuration of driver

[rufus87]

Hi there,

For example: the value of "progessText" field of "1 of 5" gets overwritten with template {{current}} of {{total}} string. The problem is related to the object destructuring position. It is done at the end of the object, while it should be done on the first position to allow the other calculated values (like 1 of 5) to overwrite.