Bot whose webview to open
Optionalchat?: InputPeerLikeChat to report to the server as the "currently open chat",
also the chat to which the message will be sent in case of
from_inline_keyboard, from_bot_menu and from_attach_menu webviews
Webview platform to use in the init data
Some of the known values:
android - Android clientsios - iOS clientstdesktop - Telegram Desktopmacos - Telegram for macOSunigram - UnigramOptionaltheme?: Theme parameters to pass to the mini app
Each value should be a string (hex-encoded RGB, no alpha)
Information about the webview to open
Open a webview.