fix(split): refactor filetype setting and highlight application

This commit refactors the way the filetype is set for the split buffer
in `hurl/split.lua`. Instead of conditionally setting the filetype based
on the presence of `edgy.nvim`, the filetype is now always set to
'hurl-nvim'. This change simplifies the code and ensures consistent
behavior regardless of the presence of `edgy.nvim`.

lua/hurl/split.lua

@@ -19,15 +19,10 @@ local M = {}
 M.show = function(data, type)
   -- mount/open the component
   split:mount()
-  -- If have edgy.nvim
-  if pcall(require, 'edgy') then
-    -- Create a custom filetype so that we can use https://github.com/folke/edgy.nvim to manage the window
-    -- E.g: { title = "Hurl Nvim", ft = "hurl-nvim" },
-    vim.api.nvim_buf_set_option(split.bufnr, 'filetype', 'hurl-nvim')
-  end
 
-  -- Set content to highlight, refer https://github.com/MunifTanjim/nui.nvim/issues/76#issuecomment-1001358770
-  vim.api.nvim_buf_set_option(split.bufnr, 'filetype', type)
+  -- Create a custom filetype so that we can use https://github.com/folke/edgy.nvim to manage the window
+  -- E.g: { title = "Hurl Nvim", ft = "hurl-nvim" },
+  vim.bo[split.bufnr].filetype = 'hurl-nvim'
 
   vim.api.nvim_buf_set_name(split.bufnr, 'hurl-response')
 
@@ -58,6 +53,12 @@ M.show = function(data, type)
   -- Add content to the bottom
   vim.api.nvim_buf_set_lines(split.bufnr, headers_table.line, -1, false, content)
 
+  -- Set content to highlight, refer https://github.com/MunifTanjim/nui.nvim/issues/76#issuecomment-1001358770
+  -- After 200ms, the highlight will be applied
+  vim.defer_fn(function()
+    vim.bo[split.bufnr].filetype = type
+  end, 200)
+
   local function quit()
     -- set buffer name to empty string so it wouldn't conflict when next time buffer opened
     vim.api.nvim_buf_set_name(split.bufnr, '')