fix(ui/input_window): allow submission when completion popup is visible

Remove guard that returned early when the completion menu was visible

Author: sudo-tee

lua/opencode/ui/input_window.lua

@@ -121,10 +121,6 @@ function M.handle_submit()
     return false
   end
   ---@cast windows { input_buf: integer }
-  local completion = require('opencode.ui.completion')
-  if completion.is_completion_visible() then
-    return false
-  end
 
   local input_content = table.concat(vim.api.nvim_buf_get_lines(windows.input_buf, 0, -1, false), '\n')
   vim.api.nvim_buf_set_lines(windows.input_buf, 0, -1, false, {})