Pagination doesn't update on deleting files in a dataset

[ddey2]

Steps to reproduce:

1. Add multiple files to a dataset, so that it spans over 2 pages. You can start with 6 files, as the default files per page is 5.
2. Now try deleting 1/2 files from 1st page, it doesn't update the page info.
   Expectation all files should come on page 1.

See the screenshots for reference.