Column not equally distributed when columnMode is set to force

[kavyasuja99]

When adding a new column, the columns are not distributed equally if columnMode is set to force

[spike-rabbit]

We are aware that the datatable has many issues around this.
We are currently working on enhancing internal things like stricter typescript checks and higher test coverage. Once this is completed we will focus on actual issues.

If you need a faster fix, feel free to create a PR.