ios: allow to set disappearance interval when sending message; allow to configure custom interval (#2428)
* ios: allow to set disappearance interval when sending message; allow to configure custom interval
* custom time picker wip
* improve interaction with time picker - touch area, cancel, keyboard, preference
* dropdown picker, refactor, text
* button condition
* weeks limit
* refactor
* update texts
* simplify
* fix null selection
* texts, set current, switch columns
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Co-authored-by: Evgeny Poberezkin <2769109+epoberezkin@users.noreply.github.com>
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