keybinding to :enew does nothing

[glennsl]

As reported by @spar7453 in #1423 (comment):

@glennsl
I tried to bind as the following
{ "key": "< space>fn", "command": ":enew", when: "normalMode" }
and it did not work.

I think that we cannot bind every vim commands in this way
and also waiting for binding
{ "key": "< space>b1", "command": ":b2", when: "normalMode" }

(I had to put empty space in front of "s" because the editor removes "< space>")

I've reproduced this myself using

  {"key": "ll", "command": ":enew", "when": "normalMode"}

and can see from the logs that the command is being executed, but nothing happens.

I suspect it's because of the effects added in #2597 which are just ignored here:

oni2/src/Store/KeyBindingsStoreConnector.re

Lines 486 to 489 in 480f09c

	let executeExCommandEffect = command =>
	Isolinear.Effect.create(~name="keybindings.executeExCommand", () =>
	ignore(Vim.command(command): (Vim.Context.t, list(Vim.Effect.t)))
	);