In vim and zed (vim and helix modes) typing "tx" will jump before the
next `x`, but typing it again won't do anything. But in helix the cursor
just jumps before the `x` after that. I added that in helix mode.
This also solves another small issue where the selection doesn't include
the first `x` after typing "fx" twice. And similarly after typing "Fx"
or "Tx" the selection should include the character that the motion
startet on.
Release Notes:
- helix: Fixed inconsistencies in the "f" and "t" motions
9a2b7ef372