Фикс: поднятие контента сообщений синхронно с раскрытием клавиатуры

Rosetta/DesignSystem/Components/ChatTextInput.swift

@@ -111,6 +111,7 @@ struct ChatTextInput: UIViewRepresentable {
     @Binding var isFocused: Bool
     var onKeyboardHeightChange: (CGFloat) -> Void
     var onUserTextInsertion: () -> Void = {}
+    var onMultilineChange: (Bool) -> Void = { _ in }
     var font: UIFont = .systemFont(ofSize: 17, weight: .regular)
     var textColor: UIColor = .white
     var placeholderColor: UIColor = UIColor.white.withAlphaComponent(0.35)
@@ -195,6 +196,7 @@ struct ChatTextInput: UIViewRepresentable {
     final class Coordinator: NSObject, UITextViewDelegate {
         var parent: ChatTextInput
         var isUpdatingText = false
+        private var wasMultiline = false
         private var pendingFocusSync: DispatchWorkItem?
 
         init(parent: ChatTextInput) {
@@ -248,6 +250,17 @@ struct ChatTextInput: UIViewRepresentable {
 
         func invalidateHeight(_ tv: UITextView) {
             tv.invalidateIntrinsicContentSize()
+            checkMultiline(tv)
+        }
+
+        private func checkMultiline(_ tv: UITextView) {
+            let lineHeight = tv.font?.lineHeight ?? 20
+            let singleLineHeight = lineHeight + tv.textContainerInset.top + tv.textContainerInset.bottom
+            let isMultiline = tv.contentSize.height > singleLineHeight + 0.5
+            if isMultiline != wasMultiline {
+                wasMultiline = isMultiline
+                parent.onMultilineChange(isMultiline)
+            }
         }
 
         func syncFocus(for tv: UITextView) {