feat(accessibility): add screen reader support for message list

Expose each message bubble as a virtual accessibility child so
screen readers can navigate the message history.

Each message reports: sender, text, media metadata, reply context,
forward info, delivery/seen status, reactions, views, and more.

Multi-column sub-items provide structured per-field access.

Author: rezabakhshilaktasaraei

Telegram/Resources/langs/lang.strings

@@ -5417,6 +5417,85 @@ https://github.com/telegramdesktop/tdesktop/blob/master/LEGAL
 "lng_search_filter_channel" = "Channels";
 "lng_search_sponsored_button" = "Ad ⋮";
 
+// Screen reader strings for message list.
+"lng_sr_chat_sending" = "Sending";
+"lng_sr_chat_sent" = "Sent";
+"lng_sr_chat_failed" = "Failed";
+"lng_sr_chat_received" = "Received";
+"lng_sr_message_list" = "Messages";
+"lng_sr_from_me" = "Me";
+"lng_sr_message_seen" = "Seen";
+"lng_sr_message_not_seen" = "Not seen";
+"lng_sr_message_played" = "Played";
+"lng_sr_message_not_played" = "Not played";
+"lng_sr_message_not_downloaded" = "Not downloaded";
+"lng_sr_message_downloading" = "Downloading";
+"lng_sr_message_reply_to" = "In reply to {name}: {text}";
+"lng_sr_message_edited" = "Edited";
+"lng_sr_message_via_bot" = "via @{bot}";
+"lng_sr_message_reactions" = "Reactions: {list}";
+"lng_sr_message_custom_emoji" = "Custom emoji {emoji}";
+"lng_sr_message_column_seen" = "Seen";
+"lng_sr_message_column_sender" = "Sender";
+"lng_sr_message_column_via_bot" = "Via bot";
+"lng_sr_message_column_reply" = "Reply";
+"lng_sr_message_column_forward" = "Forward";
+"lng_sr_message_column_media_type" = "Media type";
+"lng_sr_message_column_download" = "Download";
+"lng_sr_message_column_played" = "Played";
+"lng_sr_message_column_artist" = "Artist";
+"lng_sr_message_column_title" = "Title";
+"lng_sr_message_column_filename" = "Filename";
+"lng_sr_message_column_duration" = "Duration";
+"lng_sr_message_column_dimensions" = "Dimensions";
+"lng_sr_message_column_file_size" = "File size";
+"lng_sr_message_column_message" = "Message";
+"lng_sr_message_column_delivery" = "Delivery";
+"lng_sr_message_column_edited" = "Edited";
+"lng_sr_message_column_time" = "Time";
+"lng_sr_message_column_reactions" = "Reactions";
+"lng_sr_message_column_views" = "Views";
+"lng_sr_message_column_signature" = "Signature";
+"lng_sr_message_column_pinned" = "Pinned";
+"lng_sr_message_column_web_site" = "Website";
+"lng_sr_message_column_web_title" = "Link title";
+"lng_sr_message_column_web_description" = "Link description";
+"lng_sr_message_column_poll_question" = "Poll question";
+"lng_sr_message_column_poll_options" = "Poll options";
+"lng_sr_message_column_poll_status" = "Poll status";
+"lng_sr_message_column_contact_name" = "Contact name";
+"lng_sr_message_column_contact_phone" = "Contact phone";
+"lng_sr_message_column_location" = "Location";
+"lng_sr_message_column_sticker_emoji" = "Sticker emoji";
+"lng_sr_message_column_game_title" = "Game title";
+"lng_sr_message_column_game_description" = "Game description";
+"lng_sr_message_column_invoice_title" = "Invoice title";
+"lng_sr_message_column_invoice_amount" = "Invoice amount";
+"lng_sr_message_column_spoiler" = "Spoiler";
+"lng_sr_message_column_dice" = "Dice";
+"lng_sr_message_column_giveaway" = "Giveaway";
+"lng_sr_message_column_gift" = "Gift";
+"lng_sr_message_column_todo_title" = "Todo title";
+"lng_sr_message_column_todo_items" = "Todo items";
+"lng_sr_message_column_factcheck" = "Fact check";
+"lng_sr_message_column_forward_date" = "Forward date";
+"lng_sr_message_column_forward_author" = "Forward author";
+"lng_sr_message_column_paid_reactions" = "Paid reactions";
+"lng_sr_message_pinned" = "Pinned";
+"lng_sr_message_spoiler" = "Hidden media";
+"lng_sr_message_poll_votes#one" = "{count} vote";
+"lng_sr_message_poll_votes#other" = "{count} votes";
+"lng_sr_message_todo_completed" = "Completed";
+"lng_sr_message_todo_not_completed" = "Not completed";
+"lng_sr_message_gift_premium#one" = "Premium gift, {count} day";
+"lng_sr_message_gift_premium#other" = "Premium gift, {count} days";
+"lng_sr_message_gift_credits#one" = "Star gift, {count} star";
+"lng_sr_message_gift_credits#other" = "Star gift, {count} stars";
+"lng_sr_message_paid_content" = "Paid content";
+"lng_sr_message_live_location" = "Live location";
+"lng_sr_message_invoice_paid" = "Paid";
+"lng_sr_message_invoice_unpaid" = "Unpaid";
+
 "lng_media_save_progress" = "{ready} of {total} {mb}";
 "lng_mediaview_save_as" = "Save As...";
 "lng_mediaview_copy" = "Copy";