feat(telegram): describe locations, contacts, polls and dice

.changeset/telegram-mention-on-reply.md

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+---
+"@chat-adapter/telegram": minor
+---
+
+Add `mentionOnReply`: when enabled, a reply to one of the bot own messages reports `isMention`, so a bot in a group keeps the conversation going without the handle being repeated. Off by default — existing mention-only bots are unaffected — and readable from `TELEGRAM_MENTION_ON_REPLY`.

.changeset/telegram-native-replies.md

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+---
+"@chat-adapter/telegram": minor
+---
+
+Implement `reply` in the Telegram adapter so `Thread.reply()` threads the answer to its target instead of throwing `NotImplementedError`. The reference travels as Bot API `reply_parameters` and covers text, rich messages, documents, attachments and media groups; `allow_sending_without_reply` keeps delivery working when the target has been deleted.

.changeset/telegram-non-file-content.md

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+---
+"@chat-adapter/telegram": minor
+---
+
+Describe the message kinds Telegram sends with no text and no file. A shared location, venue, contact, poll, dice, game, invoice or story used to arrive as an empty message — the payload carried the content, but a handler reading `text` saw nothing. Each now gets a short literal description (`📍 55.75, 37.61`, `👤 Ada Lovelace +1555…`, `📊 Lunch or dinner?`), and the structured payload stays on the raw message for anyone who needs the numbers.

.changeset/telegram-sticker-animation.md

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+---
+"@chat-adapter/telegram": minor
+---
+
+Parse stickers and animations. A sticker used to arrive as an empty message — it carries no text — and an animation (Telegram GIF) was dropped entirely. A sticker now reports the emoji it stands for as its text and an image attachment typed by its real format (WebP, WebM or TGS), and an animation arrives as a video attachment.