Chat screen navigation view optimization leftovers

[Parveshdhull]

Regressions

• Behavior of navigation view when keyboard is opened
• Chat opening loading screen is incomplete (only loading skeleton is shown, other components will be implemented)
• Issue 2
• Issue 3
• Issue

Also in develop, should be fixed in the scope of optimization

• Navigation view header is too big for empty chats
• Navigation view flickers when opening chat
• Navigation view title is animated when chat screen is empty

Tech debt

• Use animatedScrollHandler for flat list
• Get rid of all reagent atoms in messages.view.cljs file (only one left)
• Rename scroll-y
• scroll-to-botom-fn needs improvement (probably should be an event)
• Remove rnio library
• Loading skeleton while hot-reloading

Design input requires

• header-container-top-margin 48 or 52?
• Position of pinned banner for starting animation(currently 142) (UPD: This poistion should be updated later, will depend on new-profile implementation and bio height)
• Position of avatar for starting animation (Optimize chat screen navigation view #18055 (comment))

[Parveshdhull]

Pending tasks moved to #18137