bug: WhichKeyFloat highlight group is ignored

[ALVAROPING1]

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• [X] I have read all the which-key.nvim docs
• [X] I have searched the existing issues of which-key.nvim
• [X] I have searched the existing issues of plugins related to this issue

Neovim version (nvim -v)

NVIM v0.10.0

Operating system/version

Ubuntu 22.04

Describe the bug

The highlight group WhichKeyFloat is ignored in the popup window, instead using NormalFloat directly

Steps To Reproduce

1. Set WhichKeyFloat to a bg color different from NormalFloat
2. Open which-key
3. See that the color used is that of NormalFloat instead of WhichKeyFloat

Expected Behavior

When WhichKeyFloat highlight group is set, it is used for the background color of the window

Health

No response

Log

Debug Started for v3.2.0
on_key: <Space>
State(start): { "Mode(n)", "Node(<Space>)", { keys = "<Space>", update = true, waited = 0 } }
  getchar
  on_key: n
  got: n
  reattach: { "<Space>n", "n" }
  detach: <Space>
  feedkeys: { "Mode(n)", "<Space>n" }
on_key: <Space>n
attach: { "<Space>", "n" }
on_key: <Space>
State(start): { "Mode(n)", "Node(<Space>)", { keys = "<Space>", update = true, waited = 0 } }
  getchar
  on_key: <Esc>
  got: <Esc>
on_key: <Space>
State(start): { "Mode(n)", "Node(<Space>)", { keys = "<Space>", update = true, waited = 0 } }
  getchar
  on_key: q
  got: q
  reattach: { "<Space>q", "n" }
  detach: <Space>
  feedkeys: { "Mode(n)", "<Space>q" }
on_key: <Space>q
attach: { "<Space>", "n" }

Repro

vim.g.mapleader = " "
vim.env.LAZY_STDPATH = ".repro"
load(vim.fn.system("curl -s https://raw.githubusercontent.com/folke/lazy.nvim/main/bootstrap.lua"))()

-- Make bg color change easy to see
vim.api.nvim_set_hl(0, "WhichKeyFloat", { bg = "#ff00ff" })

require("lazy.minit").repro({
    spec = {
        { "folke/which-key.nvim", opts = {} },
        -- add any other plugins here
    },
})

local wk = require("which-key")
wk.add({
    { "<leader>t", "<cmd>lua print(1)<cr>", desc = "test mapping" }, -- test mapping to display the window
})

[folke]

Fixed and also changed the group name while I was at it to WhichKeyNormal

border and title will also work correctly now