feat(fzf): fix fzf integration (#1048)

## Description
`<leader>snt` wasn't working properly

- the same fzf compatibility update as
#1034
- the hl_group update from #1032
but for `fzf.lua`

Those PRs should probably merged instead of this, but the hl_group
update one also needs to update `lua/noice/integrations/fzf.lua`
Figured I'd submit this to bump visibility of the issue.

## Related Issue(s)

#1029
#1024

lua/noice/integrations/fzf.lua

@@ -19,6 +19,9 @@ function M.entry(message)
   for _, text in ipairs(line._texts) do
     ---@type string?
     local hl_group = text.extmark and text.extmark.hl_group
+    if type(hl_group) == "number" then
+      hl_group = vim.fn.synIDattr(hl_group, "name")
+    end
     hl[#hl + 1] = hl_group and fzf.utils.ansi_from_hl(hl_group, text:content()) or text:content()
   end
   return {