Fix forge bugs

[wkpark]

fix issue #161

• old gradio bugs fixed.
• workaround buggy webui-forge : it seems webui-forge team applied unmature gradio4 patch. script hooks totally broken.
  • it caused by gradio4. just install a fresh forge....  lllyasviel/stable-diffusion-webui-forge#878 (comment)
  • fix venv/Lib/site-packages/gradio/networking.py url_ok()

def url_ok(url: str) -> bool:
    try:
        for _ in range(5):
            with warnings.catch_warnings():
                warnings.filterwarnings("ignore")
                r = httpx.head(url, timeout=30, verify=False) # <=== increase timeout ~10~30
                #r = httpx.head(url, timeout=3, verify=False)
            if r.status_code in (200, 401, 302):  # 401 or 302 if auth is set
                return True
            time.sleep(0.500)
    except (ConnectionError, httpx.ConnectError):
        return False
    return False