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/util/format.lua

@@ -97,10 +97,19 @@ end
 
 ---@param buf? boolean
 function M.toggle(buf)
+  M.enable(not M.enabled(), buf)
+end
+
+---@param enable? boolean
+---@param buf? boolean
+function M.enable(enable, buf)
+  if enable == nil then
+    enable = true
+  end
   if buf then
-    vim.b.autoformat = not M.enabled()
+    vim.b.autoformat = enable
   else
-    vim.g.autoformat = not M.enabled()
+    vim.g.autoformat = enable
     vim.b.autoformat = nil
   end
   M.info()