Selecting sibling nodes does not extend selection in visual mode

[lykahb]

Summary

Alt-n and Alt-p behave the same in the select mode, as in the normal mode. They move selection instead of expanding it.

Reproduction Steps

I tried this:

1. Open a file with a language supported by tree-sitter. Select a syntax node with Alt-O.
2. Enter select mode with "v".
3. Move selection to siblings with Alt-n, Alt-p.

I expected this to happen:
The selection expands to include the newly selected nodes.

Instead, this happened:
The selection moves to the newly selected node. The node selected before loses the selection. In other words, Alt-n and Alt-p behave the same in the select mode, as in the normal mode.

https://asciinema.org/a/FNyUuzPGy8n9A19esl2ZFQGtR

Helix log

~/.cache/helix/helix.log

please provide a copy of `~/.cache/helix/helix.log` here if possible, you may need to redact some of the lines

Platform

Linux

Terminal Emulator

Gnome Terminal

Helix Version

helix 22.08.1 (e917a8e)

[the-mikedavis]

Duplicate of #1999