handle tg.UpdatesTooLong to prevent client becoming unreponsive

[TrixiS]

Is really needed for Dispatcher

[celestix]

Please elaborate.

[TrixiS]

After receiving UpdatesTooLong client no longer receives any updates. As I can see in dispatcher implementation, there is even no logs about receiving this update, so it's kinda confusing :) . I would like to ask for an implementation of handling UpdatesTooLong (gaps filling).

[celestix]

Can you reach us out in the support chat on telegram so that we can reduce lags between the communication? let's get it fixed.