Each Telegram binding keeps one long poll (up to 25 s) in flight, and
every poll took one of the 4 call slots of the add-on client. Five
bindings left no slot for the other calls (test, send, typing, me,
media, tool calls), which failed with "not sent", and the extra bindings
never polled.
Polls now count against a separate pool of 64 per add-on client. The
limit of the short calls stays at Concurrency. Both pools stop at
withdraw, and drain waits for polls as well.
Assisted-by: Claude:claude-sonnet-5-5
Signed-off-by: Ettore Di Giacinto <mudler@localai.io>