incorrect initial terminal size

Describe the bug the terminal size seems to be incorrect when first opening the site, tho it gets fixed after resizing the window

To Reproduce

1. open the ttyd web page
2. terminal size is wrong on the first load
3. resizing the browser window causes it to fix itself

Expected behavior the size of the terminal should initially match the window size

Screenshots/Screencasts https://files.catbox.moe/t94f3h.mp4

Environment:

• OS: Arch Linux x86_64 Linux 6.19.11-arch1-1
• Browser: Chromium 147.0.7727.55

Additional context i don't think the os/browser really matter here, i've experienced it basically everywhere i've used ttyd so far