[Bug] Custom keymaps prefixed with `<localleader>` aren't available immediately after opening diffview

[garlicbreadcleric]

Description

I have a following Lazy.nvim config for Diffview:

Config

{
  'sindrets/diffview.nvim',
  lazy = false,
  keys = {
    -- ...
  },
  opts = function()
    local actions = require('diffview.actions')
    return {
      -- ...
      keymaps = {
        view = {
          { 'n', '<tab>', actions.select_next_entry, { desc = 'Next file diff' } },
          { 'n', '<s-tab>', actions.select_prev_entry, { desc = 'Previous file diff' } },
          { 'n', '[x', actions.prev_conflict, { desc = 'Previous conflict' } },
          { 'n', ']x', actions.next_conflict, { desc = 'Next conflict' } },
          { 'n', '<localleader>xo', actions.conflict_choose('ours'), { desc = 'Accept ours' } },
          { 'n', '<localleader>xt', actions.conflict_choose('theirs'), { desc = 'Accept theirs' } },
          { 'n', '<localleader>xb', actions.conflict_choose('base'), { desc = 'Accept base' } },
          { 'n', '<localleader>xa', actions.conflict_choose('all'), { desc = 'Accept all' } },
          { 'n', '<localleader>Xo', actions.conflict_choose_all('ours'), { desc = 'Accept ours (whole file)' } },
          { 'n', '<localleader>Xt', actions.conflict_choose_all('theirs'), { desc = 'Accept theirs (whole file)' } },
          { 'n', '<localleader>Xb', actions.conflict_choose_all('base'), { desc = 'Accept base (whole file)' } },
          { 'n', '<localleader>Xa', actions.conflict_choose_all('all'), { desc = 'Accept all (whole file)' } },
        },
      },
    }
  end,
  main = 'diffview',
  setup = true,
}

(full config here, minimal config below)

When I do :DiffviewOpen, I expect the <localleader>xo etc keymaps to be available. However, which-key doesn't show them when I press <localleader>, and pressing <localleader>xo doesn't do anything. <tab> and <s-tab> keymaps are working though. If I then <c-w>h to the diffview sidebar and then <c-w>l back to the file diff, the keymaps become available.

Expected behavior

<localleader>-prefixed keymaps are available immediately after opening file diff via :DiffviewOpen

Actual behavior

<localleader>-prefixed keymaps only become available after switching to the sidebar and then back to file diff

Steps to reproduce

1. :DiffviewOpen
2. Try to use <localleader>-prefixed keymap
3. Switch to sidebar and back
4. Try to use a keymap again

Health check

Output of :checkhealth diffview

==============================================================================
diffview:                                   require("diffview.health").check()

Checking plugin dependencies ~
- OK nvim-web-devicons installed.

Checking VCS tools ~
- The plugin requires at least one of the supported VCS tools to be valid.
- OK Git found.
- OK Git is up-to-date. (2.43.0)
- WARNING Configured `hg_cmd` is not executable: 'hg'

Log info

Relevant info from :DiffviewLog

############################
### PUT LOG CONTENT HERE ###
############################

Neovim version

NVIM v0.11.0-dev-1775+g4a2a54f993
Build type: RelWithDebInfo
LuaJIT 2.1.1736781742

I think this was the case with stable Neovim too, lmk if you can't reproduce this on stable, I'll try to roll back and reproduce.

Operating system and version

Linux 6.8.0-55-generic x86_64 GNU/Linux

Minimal config

-- #######################################
-- ### USAGE: nvim --clean -u mini.lua ###
-- #######################################

local root = vim.fn.stdpath('run') .. '/nvim/diffview.nvim'
local plugin_dir = root .. '/plugins'
vim.fn.mkdir(plugin_dir, 'p')

for _, name in ipairs({ 'config', 'data', 'state', 'cache' }) do
  vim.env[('XDG_%s_HOME'):format(name:upper())] = root .. '/' .. name
end

local plugins = {
  { 'nvim-web-devicons', url = 'https://github.com/nvim-tree/nvim-web-devicons.git' },
  { 'diffview.nvim', url = 'https://github.com/sindrets/diffview.nvim.git' },
  { 'folke/which-key.nvim', url = 'https://github.com/folke/which-key.nvim.git' },
}

for _, spec in ipairs(plugins) do
  local install_path = plugin_dir .. '/' .. spec[1]
  if vim.fn.isdirectory(install_path) ~= 1 then
    if spec.url then
      print(string.format("Installing '%s'...", spec[1]))
      vim.fn.system({ 'git', 'clone', '--depth=1', spec.url, install_path })
    end
  end
  vim.opt.runtimepath:append(spec.path or install_path)
end

local actions = require('diffview.actions')
require('diffview').setup({
  keymaps = {
    view = {
      { 'n', '<tab>', actions.select_next_entry, { desc = 'Next file diff' } },
      { 'n', '<s-tab>', actions.select_prev_entry, { desc = 'Previous file diff' } },
      { 'n', '[x', actions.prev_conflict, { desc = 'Previous conflict' } },
      { 'n', ']x', actions.next_conflict, { desc = 'Next conflict' } },
      { 'n', '<localleader>xo', actions.conflict_choose('ours'), { desc = 'Accept ours' } },
      { 'n', '<localleader>xt', actions.conflict_choose('theirs'), { desc = 'Accept theirs' } },
      { 'n', '<localleader>xb', actions.conflict_choose('base'), { desc = 'Accept base' } },
      { 'n', '<localleader>xa', actions.conflict_choose('all'), { desc = 'Accept all' } },
      { 'n', '<localleader>Xo', actions.conflict_choose_all('ours'), { desc = 'Accept ours (whole file)' } },
      { 'n', '<localleader>Xt', actions.conflict_choose_all('theirs'), { desc = 'Accept theirs (whole file)' } },
      { 'n', '<localleader>Xb', actions.conflict_choose_all('base'), { desc = 'Accept base (whole file)' } },
      { 'n', '<localleader>Xa', actions.conflict_choose_all('all'), { desc = 'Accept all (whole file)' } },
    },
  },
})

vim.g.mapleader = ' '
vim.g.maplocalleader = ','
vim.opt.termguicolors = true
vim.cmd('colorscheme ' .. (vim.fn.has('nvim-0.8') == 1 and 'habamax' or 'slate'))

print('Ready!')