Added animation when collapsing the composer

Author: martinmitrevski

Sources/StreamChatSwiftUI/ChatChannel/Composer/AttachmentPickerTypeView.swift

@@ -6,7 +6,7 @@ import StreamChat
 import SwiftUI
 
 /// Enum for the picker type state.
-public enum PickerTypeState {
+public enum PickerTypeState: Equatable {
     /// Picker is expanded, with a selected `AttachmentPickerType`.
     case expanded(AttachmentPickerType)
     /// Picker is collapsed.

Sources/StreamChatSwiftUI/ChatChannel/Composer/MessageComposerViewModel.swift

@@ -36,7 +36,11 @@ open class MessageComposerViewModel: ObservableObject {
     @Published public var text = "" {
         didSet {
             if text != "" {
-                pickerTypeState = .collapsed
+                if pickerTypeState != .collapsed {
+                    withAnimation {
+                        pickerTypeState = .collapsed
+                    }
+                }
                 channelController.sendKeystrokeEvent()
                 checkTypingSuggestions()
             } else {