Remove changelog length limit

[m-dzianishchyts]

Что этот PR делает

Убирает ограничение длины чейнджлога в 4096 символов. Этот случай будет обрабатываться ботом путем отправки чейнджлога в несколько последовательных сообщений.

Тестирование

Бот протестирован.

Summary by Sourcery

Enhancements:

• Handle long changelogs by sending them in multiple consecutive messages.

[sourcery-ai]

Reviewer's Guide by Sourcery

This PR removes the 4096 character limit for changelog entries. Instead of truncating the changelog, the bot will now send the changelog in multiple messages if it exceeds the limit.

Sequence diagram for changelog validation and sending process

sequenceDiagram
    participant PR as Pull Request
    participant Bot as Changelog Bot
    participant Discord as Discord Channel

    PR->>Bot: Submit changelog
    activate Bot
    Note over Bot: Validate changelog
    alt Changelog is valid
        Bot->>Discord: Send first part of changelog
        loop If more content remains
            Bot->>Discord: Send next part of changelog
        end
    else Changelog is invalid
        Bot-->>PR: Return validation error
    end
    deactivate Bot

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File-Level Changes

Change	Details	Files
Removed the changelog length limit.	Removed the DISCORD_EMBED_DESCRIPTION_LIMIT constant. Removed the logic that raises an exception if the changelog exceeds the limit. Removed the logic that joins change messages before checking the length limit.	tools/changelog/changelog_utils.py

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[AyIong]

Все тесты упали нахуй, думаю можно лить