feature: match icon background when links are in headers

[thesimonho]

Neovim version (nvim -v)

NVIM v0.11.0

Neovim distribution

LazyVim

Operating system

Linux, macOS

Terminal emulator / GUI

Wezterm

Describe the bug

The background color of icons are incorrect when they're for links in headers. For example:

### [Lualine](https://github.com/nvim-lualine/lualine.nvim)

In this case theres an additional issue where the background color seems to extend far beyond the icon/text as well:

### [WezTerm](https://wezfurlong.org/wezterm/) and [WezTerm Tabline](https://github.com/michaelbrusegard/tabline.wez)

(is this second case somehow related to #82, but just coincidentally has the same bg color as the icons?)

Icons work fine for links outside of headers

Expected behavior

Icons should have the same background color as the header

Healthcheck output

render-markdown.nvim [version] ~
- OK plugin 8.3.11
- OK neovim >= 0.11

render-markdown.nvim [configuration] ~
- OK valid

render-markdown.nvim [treesitter] ~
- OK markdown: parser installed
- OK markdown_inline: parser installed
- WARNING latex: parser not installed
  - ADVICE:
    - Disable latex support to avoid this warning
    - require('render-markdown').setup({ latex = { enabled = false } })
- OK html: parser installed
- OK markdown: highlight enabled

render-markdown.nvim [icons] ~
- OK using: mini.icons

render-markdown.nvim [executables] ~
- WARNING latex2text: not installed
  - ADVICE:
    - Disable latex support to avoid this warning
    - require('render-markdown').setup({ latex = { enabled = false } })

render-markdown.nvim [conflicts] ~
- OK headlines: not installed
- OK markview: not installed
- OK obsidian: not installed

Plugin configuration

{
  checkbox = {
    enabled = false
  },
  code = {
    language_pad = 2,
    left_pad = 2,
    min_width = 60,
    right_pad = 1,
    width = "block"
  },
  completions = {
    blink = {
      enabled = true
    }
  },
  file_types = {
    [2] = "Avante"
  },
  heading = {
    border = true,
    icons = { " 󰲡 ", " 󰲣 ", " 󰲥 ", " 󰲧 ", " 󰲩 ", " 󰲫 " },
    position = "inline"
  },
  pipe_table = {
    alignment_indicator = "┅",
    border = { "╭",
      [3] = "╮",
      [7] = "╰",
      [9] = "╯"
    },
    preset = "round"
  }
}

Plugin error log

N/A

Confirmations

• I have updated this plugin to the latest version using my plugin manager
• I have provided the text contained in all screenshots as raw text in this issue. This means if there is a screenshot below it is the copy pasted contents of the file in the screenshot. I understand that my issue will be closed if I have not.

Additional information

No response

[MeanderingProgrammer]

Should handle background better after: da3e146