Off by one error when selecting start or end of lines when selection followed by empty line

[aral]

Summary

An extra cursor gets created when a start of line/end of line search is carried out on a selection that is followed by an empty line.

Reproduction Steps

With the following text:

1. console.log('hello')
2. 

Run these commands to select line 1 and search for start of line within it:

g1g
x
s
^
<return>

What should happen

One cursor should be created (on line 1)

What actually happens

Two cursors are created (one on line 1 and one on line 2).

(The same happens if you search for end of line using $.)

Helix log

n/a

Platform

Linux (Fedora Silverblue 36)

Terminal Emulator

Black Box

Helix Version

helix 22.05 (e4c9d40)