Don't seek `FilterCursor` upon creation

This lets us use `next` or `prev` to decide whether to park the cursor
at the first or last filtered item.

Co-Authored-By: Nathan Sobo <nathan@zed.dev>
a6d0caf557Antonio Scandurra committed on 3/15/2022, 2:13:23 PMparentf10fd6c
5 files changedLine totals unavailable