Indent adds spaces on empty lines

[antoyo]

Reproduction steps

Use > to indent an empty line and it will add spaces on it.
Vim won't indent empty lines which I prefer because empty lines don't usually need to be indented.

Environment

• Platform: Linux
• Terminal emulator: Alacritty
• Helix version: helix v0.6.0

[EpocSquadron]

I agree that this often results in unintended whitespace at end of line when indenting selections that happen to include blank lines. This is problematic for languages which don't have an auto formatter active or set.