Is your feature request related to a problem? Please describe.
I'm frustrated that Telegram WebK currently does not support connecting through MTProxy servers. In regions where Telegram is blocked, this makes it difficult or impossible to use the web version without a full VPN.

Describe the solution you'd like
I would like Telegram WebK to support MTProxy, similar to the desktop and mobile apps. Ideally, users should be able to configure a custom MTProxy server or use one from a list, allowing them to connect securely and bypass restrictions directly from the web interface.

Describe alternatives you've considered

• Using a full VPN or proxy at the browser or OS level, which is less convenient and consumes more resources.
• Switching to Telegram Desktop or Mobile where MTProxy is supported, but this doesn't help in environments where installing apps is restricted.

Additional context
MTProxy support in Telegram WebK would significantly improve accessibility in censored regions, especially for users who rely on lightweight web access or are on shared/public systems where installing VPN software or Telegram Desktop is not an option.