bug: Missing symbols when using treesitter as backend

Neovim version (nvim -v)

NVIM v0.10.0-dev-1873+g8f08b1efb

Operating system/version

Arch Linux

Output of :AerialInfo

Aerial Info

Filetype: lua
Configured backends:
treesitter (supported) (attached)
lsp (not supported) [No LSP client found that supports symbols]
markdown (not supported) [Filetype is not markdown]
man (not supported) [Filetype is not man]
Show symbols: all symbols

Describe the bug

Every time i try to use aerial with treesitter as main backend it generally doesn't show any symbols, and when it shows it's only the functions present in the file, even if i set filter_kind to false.

What is the severity of this bug?

breaking (some functionality is broken)

Steps To Reproduce

Execute nvim -u repro.lua
Open any file which filetype is supported by treesitter (i suggest to test with the minimal config file used)
Execute AerialToggle

Expected Behavior

In this scenario would be expected for aerial to show me all symbols existent in my file, not only the functions.

Minimal example file

The minimal config file below can be used to reproduce the issue.

Minimal init.lua

-- DO NOT change the paths and don't remove the colorscheme
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

local lazypath = vim.fn.stdpath("data") .. "/lazy/lazy.nvim"
if not vim.loop.fs_stat(lazypath) then
    vim.fn.system({
        "git",
        "clone",
        "--filter=blob:none",
        "https://github.com/folke/lazy.nvim.git",
        "--branch=stable", -- latest stable release
        lazypath,
    })
end
vim.opt.rtp:prepend(lazypath)

local plugins = {
    {
        "nvim-treesitter/nvim-treesitter",
        build = ":TSUpdate",
        opts = {
            ensure_installed = { "c", "lua", "vim", "vimdoc", "query" },
            sync_install = false,
            auto_install = true,
            highlight = { enable = true },
            indent = { enable = true }
        },
        config = function(_, opts)
            require("nvim-treesitter.configs").setup(opts)
        end
    },
    {
        "stevearc/aerial.nvim",
        dependencies = {
            "nvim-treesitter/nvim-treesitter",
            "nvim-tree/nvim-web-devicons"
        },
        opts = {
            filter_kind = false
        }
    }
}

require("lazy").setup(plugins, {
    root = root .. "/plugins"
})

vim.cmd.colorscheme("retrobox")

Additional context

No response

stevearc / aerial.nvim