feat(keymaps): dynamic which-key icons/descriptions for toggles (#4050)

## Description

<!-- Describe the big picture of your changes to communicate to the
maintainers
  why we should accept this pull request. -->

## Related Issue(s)

- [ ] Closes #4025

## Screenshots


![image](https://github.com/user-attachments/assets/8453c23c-d560-490c-9f96-a22ea88f45fd)

## Checklist

- [ ] I've read the
[CONTRIBUTING](https://github.com/LazyVim/LazyVim/blob/main/CONTRIBUTING.md)
guidelines.

lua/lazyvim/plugins/extras/ui/mini-animate.lua

@@ -14,6 +14,16 @@ return {
       end, { expr = true })
     end
 
+    LazyVim.toggle.map("<leader>ua", {
+      name = "Mini Animate",
+      get = function()
+        return not vim.g.minianimate_disable
+      end,
+      set = function(state)
+        vim.g.minianimate_disable = not state
+      end,
+    })
+
     local animate = require("mini.animate")
     return {
       resize = {