Fix Dump Cols Cell Shifting 1 Extra Column

[IntegerLimit]

This PR fixes the dump columns cell adding one extra shift of the scope's output cell after the final item.

This led to issues such as:

• Markers such as #! END_ROW not being replaced if were X columns next to a #! DUMP_COLS cell, where X was the length of the DUMP_COLS array
• Other content to the right of a #! DUMP_COLS having one (extra) empty column between them and the column data

Example:

Template: template.xlsx
Model: model.json

Current (Errored) Output:
output.xlsx

New (Fixed) Output, with this PR applied:
new-output.xlsx