feat(lualine): use global window size for trunc

Since I switched to a global status bar, it makes sense to truncate on
global window size

Author: cameronr

nvim/lua/plugins/lualine.lua

@@ -18,7 +18,7 @@ return {
     --- return function that can format the component accordingly
     local function trunc(trunc_width, trunc_len, hide_width, no_ellipsis)
       return function(str)
-        local win_width = vim.fn.winwidth(0)
+        local win_width = vim.o.columns
         if hide_width and win_width < hide_width then
           return ''
         elseif trunc_width and trunc_len and win_width < trunc_width and #str > trunc_len then