gl/viv-fb: fix gl plugin hang when run with viv-fb backend

below commit change the window resize thread and cause viv-fb backend hang, need move resize code after window->open is called. Otherwise, the resize message will send to a thread that not start running and window resize call will waiting forever.

Commit: b887db1e glwindow: fix racy resize updates

Take locks around resize handling and marshall all resizes to the windowing thread by default.