chore: migrate and update tests.

Signed-off-by: xsahil03x <[email protected]>

packages/stream_chat_flutter/lib/src/message_input/stream_message_input.dart

@@ -129,7 +129,6 @@ class StreamMessageInput extends StatefulWidget {
     this.customAutocompleteTriggers = const [],
     this.mentionAllAppUsers = false,
     this.sendButtonBuilder,
-    this.quotedMessageBuilder,
     this.shouldKeepFocusAfterMessage,
     this.validator = _defaultValidator,
     this.restorationId,
@@ -267,9 +266,6 @@ class StreamMessageInput extends StatefulWidget {
   /// Builder for creating send button
   final MessageRelatedBuilder? sendButtonBuilder;
 
-  /// Builder for building quoted message
-  final Widget Function(BuildContext, Message)? quotedMessageBuilder;
-
   /// Defines if the [StreamMessageInput] loses focuses after a message is sent.
   /// The default behaviour keeps focus until a command is enabled.
   final bool? shouldKeepFocusAfterMessage;
@@ -370,8 +366,8 @@ class StreamMessageInputState extends State<StreamMessageInput>
   bool get _hasQuotedMessage =>
       _effectiveController.message.quotedMessage != null;
 
-  bool get _isEditing =>
-      _effectiveController.message.status != MessageSendingStatus.sending;
+  // TODO:
+  bool get _isEditing => _effectiveController.message.state.isCompleted;
 
   BoxBorder? _draggingBorder;
 
@@ -786,6 +782,7 @@ class StreamMessageInputState extends State<StreamMessageInput>
   Future<void> _onAttachmentButtonPressed() async {
     final attachments = await showStreamAttachmentPickerModalBottomSheet(
       context: context,
+      useRootNavigator: true,
       allowedTypes: widget.allowedAttachmentPickerTypes,
       initialAttachments: _effectiveController.attachments,
     );
@@ -1135,20 +1132,14 @@ class StreamMessageInputState extends State<StreamMessageInput>
     if (!_hasQuotedMessage) return const Offstage();
     final containsUrl = _effectiveController.message.quotedMessage!.attachments
         .any((element) => element.titleLink != null);
-
-    return widget.quotedMessageBuilder?.call(
-          context,
-          _effectiveController.message.quotedMessage!,
-        ) ??
-        StreamQuotedMessageWidget(
-          reverse: true,
-          showBorder: !containsUrl,
-          message: _effectiveController.message.quotedMessage!,
-          messageTheme: _streamChatTheme.otherMessageTheme,
-          padding: const EdgeInsets.fromLTRB(8, 8, 8, 0),
-          onQuotedMessageClear: widget.onQuotedMessageCleared,
-          attachmentThumbnailBuilders: widget.attachmentThumbnailBuilders,
-        );
+    return StreamQuotedMessageWidget(
+      reverse: true,
+      showBorder: !containsUrl,
+      message: _effectiveController.message.quotedMessage!,
+      messageTheme: _streamChatTheme.otherMessageTheme,
+      padding: const EdgeInsets.fromLTRB(8, 8, 8, 0),
+      onQuotedMessageClear: widget.onQuotedMessageCleared,
+    );
   }
 
   Widget _buildAttachments() {
@@ -1451,10 +1442,12 @@ class StreamMessageInputState extends State<StreamMessageInput>
       skipEnrichUrl: skipEnrichUrl,
     );
 
-    if (shouldKeepFocus) {
-      FocusScope.of(context).requestFocus(_effectiveFocusNode);
-    } else {
-      FocusScope.of(context).unfocus();
+    if (mounted) {
+      if (shouldKeepFocus) {
+        FocusScope.of(context).requestFocus(_effectiveFocusNode);
+      } else {
+        FocusScope.of(context).unfocus();
+      }
     }
   }