feat: items sent to the quickfix list don't specify renundant lnum 1

The line number was previously added for all items, but it was always 1.
It did not convey any useful information, so I'm removing it to make the
implementation a little less cluttered.

lua/yazi/openers.lua

@@ -32,7 +32,6 @@ function M.send_files_to_quickfix_list(chosen_files)
       end
 
       return {
-        lnum = 1,
         filename = path,
         text = path,
       }