Re-sort when rows are added.

It would be nice if the table would resort itself as rows are added. At least there should be an option to re-sort. Currently, one must reset the sort and then re-establish the previous sort whenever rows are added or changed.

The issue does not name any files, tests, or entry points. Start by locating the sorting behavior and the handling of added or changed rows, then clarify whether automatic resorting or an opt-in option is required. Done means the chosen behavior preserves the active sort without requiring users to reset and re-establish it.

Written by the indexing model from the issue text.