add zindex option for popup action.which_key

[shcode]

Description

add zindex option for action.which_key. The current value is 50 which sometimes conflicted with picker window.

Fixes #2976

Type of change

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

• Ran several test (over 50, below 50) in neovide by adding code below and it works as expected.

local action_generate = require 'telescope.actions.generate'
require('telescope').setup {
  defaults = {
    mappings = {
      i = { 
        ['<c-/>'] = action_generate.which_key {
          zindex = 60,
        },
      },
    },
  },
}

Configuration:

• Neovim version (nvim --version): 0.9.5
• Operating system and version: darwin-arm64

Checklist:

• My code follows the style guidelines of this project (stylua)
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation (lua annotations)

[jamestrew]

thanks for this.
closes #2976

[emmanueltouzery]

I have tested this pull request with neovim 0.9.5 and neovide 0.12.1 and I can confirm that it fixes the issue 👍

[emmanueltouzery]

I also believe it's a "Bug fix (non-breaking change which fixes an issue)", and I don't know why this is marked as draft, in my opinion the PR is ready.

[shcode]

I also believe it's a "Bug fix (non-breaking change which fixes an issue)", and I don't know why this is marked as draft, in my opinion the PR is ready.

I am sorry, I forgot to continue on this. My bad.
I think it's ready now.

[jamestrew]

thanks again!