Warning when setting a which_key option: "No name available for anonymous functions"

[mihaifm]

Description

Hi and thanks for the plugin.

I'm getting a warning when trying to set some options for the telescope which_key menu, just by copying the example in :help telescope.actions.generate

  require("telescope").setup {
    defaults = {
      mappings = {
        n = {
          ["?"] = action_generate.which_key {
            name_width = 20, -- typically leads to smaller floats
            max_height = 0.5, -- increase potential maximum height
            separator = " > ", -- change sep between mode, keybind, and name
            close_with_action = false, -- do not close float on action
          },
        },
      },
    },
  }

Following warning is shown:
[telescope.actions.which_key]: No name available for anonymous functions.

Also the ? key now shows up in the menu, as <anonymous>

n > ?       > <anonymous>

It's a minor issue but it's nice if it were fixed.

thanks

Neovim version

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Operating system and version

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Telescope version / branch / rev

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checkhealth telescope

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Steps to reproduce

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Expected behavior

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Actual behavior

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Minimal config

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