bump BroadcastManager to 3.2.2

[3.2.2] - 2026-06-15

Changed

• Reduced default broadcast concurrency from 20 to 10.
• Reduced the maximum allowed concurrency limit from 50 to 30 to reduce pressure on the MadelineProto event loop during large broadcasts.
• Progress status messages are now edited every 5 seconds instead of every second.
• Progress status updates now also perform a final update when the operation reaches completion.
• Slowed down broadcast workers with a small delay between processed jobs.
• Added a delay after each media album chunk sent with sendMultiMedia.
• Added a delay between sequential messages sent to the same peer.
• Broadcast control buttons are now displayed in English:
  • Pause
  • Resume
  • Cancel

Fixed

• Reduced the chance of Timeout while waiting for updates.getChannelDifference after heavy broadcasts.
• Reduced unnecessary progress-message edit calls during active broadcasts.
• Prevented noisy logs for harmless MESSAGE_NOT_MODIFIED errors during progress updates.
• Improved progress update stability by ignoring unchanged status edits instead of logging them as failures.

Notes

• This release keeps the custom BroadcastManager flow, including saved message IDs, edit-last-broadcast, delete-last-broadcast, scheduled broadcasts, and self-destruct broadcasts.
• This is a stability and load-reduction update; it does not migrate to MadelineProto's official Broadcast API.