bug: remapped `toggle_explorer` does not toggle

[caenrique]

Problem

When remapping toggle_explorer it no longer toggles. It just opens/focus the explorer window

Reproduction

vim.pack.add({
  'gh:esmuellert/codediff.nvim',
})
vim.g.mapleader = ' '
require('codediff').setup({
  keymaps = {
    view = {
      toggle_explorer = '<leader>e',
    },
    explorer = {
      toggle_explorer = '<leader>e',
    },
  },
})

1. Open CodeDiff
2. hit <leader>e

Expectation: explorer should close
Actual behavior: explorer doesn't close

I tested that with default keymaps, the toggle function works correctly.