neovim: support automatic mode changing for certain actions

[fidgetingbits]

If I'm in mode t and I say copy foo row X I am left in visual mode after the action completes, with my cursor still on the terminal line. This type of action shouldn't change the mode you're in imo, I would expect to still be in mode t.

[saidelike]

That should be easy to do since there is logic for detecting a given action and restoring modes in packages\cursorless-neovim\src\registerCommands.ts already.