bug: loading fugitive with cmd = "Git" throws error when passed multiple arguments

[garcia5]

Did you check docs and existing issues?

• I have read all the lazy.nvim docs
• I have searched the existing issues of lazy.nvim
• I have searched the existing issues of plugins related to this issue

Neovim version (nvim -v)

v0.9.0-dev-1167+gddd257f75-dirty

Operating system/version

MacOS 13.2.1

Describe the bug

When configuring the tpope/vim-fugitive plugin to lazy-load on the :Git command, I get an error when passing more than 1 argument. This looks like it's caused by passing event.fargs as the args property to vim.cmd here, while fugitive (and maybe others?) are expecting { event.args }

Current behavior:
:Git restore % -> vim.cmd({ cmd = "Git", args = { "restore", "%" } ->

Error executing Lua callback: .../share/nvim/lazy/lazy.nvim/lua/lazy/core/handler/cmd.lua:32: Wrong number of arguments                                                                                                                                                                                                                                                                     
stack traceback:
        [C]: in function 'cmd'
        .../share/nvim/lazy/lazy.nvim/lua/lazy/core/handler/cmd.lua:32: in function <.../share/nvim/lazy/lazy.nvim/lua/lazy/core/handler/cmd.lua:16>

Running the command a 2nd time after the error appears works as expected

Steps To Reproduce

1. Add plugin

{
"tpope/vim-fugitive",
cmd = "Git"
}

2. :Git status --short
3. Error message appears

Expected Behavior

Fugitive command should execute first try without error. I'm not sure if event.fargs should be changed to { event.args } in cmd.lua, since maybe other plugins work differently. But maybe a config could be added for the cmd field to specify combining arguments?

e.g.

-- plugins/git.lua
return {
  "tpope/vim-fugitive",
  cmd = {
    "Git",
    {
      combine_args = true, -- false by default to keep existing behavior
    }
  }
}

### Repro

```Lua
local root = vim.fn.fnamemodify("./.repro", ":p")

-- set stdpaths to use .repro
for _, name in ipairs({ "config", "data", "state", "cache" }) do
	vim.env[("XDG_%s_HOME"):format(name:upper())] = root .. "/" .. name
end

-- bootstrap lazy
local lazypath = root .. "/plugins/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
	vim.fn.system({
		"git",
		"clone",
		"--filter=blob:none",
		"--single-branch",
		"https://github.com/folke/lazy.nvim.git",
		lazypath,
	})
end
vim.opt.runtimepath:prepend(lazypath)

-- install plugins
local plugins = {
	-- do not remove the colorscheme!
	"folke/tokyonight.nvim",
	-- add any other pugins here
	{
		"tpope/vim-fugitive",
		cmd = "Git",
	},
}
require("lazy").setup(plugins, {
	root = root .. "/plugins",
})

-- add anything else here
vim.opt.termguicolors = true
-- do not remove the colorscheme!
vim.cmd([[colorscheme tokyonight]])

[folke]

Should be fixed now. Thank you for the detailed bug report!