Upgrade TDLib + Custom Emoji display support + Bulk of features and changes

[vkryl]

This pull request includes the following changes:

• TDLib upgrade from tdlib/td@98bfbc9 to tdlib/td@86294f2 (list of changes) with support of all corresponding behaviour changes
• Built-in emoji parser in all input fields
• Optimized emoji parsing in all input fields and text changes handling in the chat's message input field
• Custom emoji rendering & copy-paste support in all places of the app where they might display
• Ability to change Who can send me Voice and Video messages privacy setting (if current user has Telegram Premium subscription): via Settings — Privacy and Security and Chat Profile — Three-dot menu — Privacy Exceptions
• Hint when user doesn't accept Voice & Video messages in a chat and in the share sheet
• Up to 60 FPS animated stickers playback (previously limited by 30 FPS)
• Stable animated stickers & GIFs playback on screens with dynamic refresh rate (speed shouldn't visually change anymore once display switches between refresh rate modes)
• Reworked search query highlighting with overall better algorithm with latin <—> cyrillic transliteration support: e.g. now when you look for Вячеслав in your contacts list, Vyacheslav will be highlighted (and vice versa)
• Video stickers & animated emoji preview in system notifications
• Improved notifications reliability by performing additional token registration attempts when certain events occur
• Improved content protection for messages with corresponding flag
• Fully reworked service messages: now they use the same text renderer used in other places of the app, support entities (including custom emoji) and affected by Settings — Themes and Chats — Text Size setting
• Reworked Recent Actions creation that allows providing support for new action types faster
• Ability to copy link preview url in Edited Message recent actions
• Bold counters in chat search results
• Proper copy & paste of usernameless mentions
• Fixed monospace entity loss in WYSIWYG input field on Samsung devices
• Some other bugfixes

Note that this PR is not limited by the changes above, as the list might miss some more actual changes.

This PR is still under development and can be used to track progress. Once it gets merged, it will become available to all Telegram X beta subscribers.