fix: Center inputfield

lib/pages/chat/chat_view.dart

@@ -376,12 +376,15 @@ class ChatView extends StatelessWidget {
                   ),
                   if (controller.room.canSendDefaultMessages &&
                       controller.room.membership == Membership.join)
-                    Padding(
+                    Container(
                       padding: EdgeInsets.only(
                         bottom: bottomSheetPadding,
                         left: bottomSheetPadding,
                         right: bottomSheetPadding,
                       ),
+                      constraints: const BoxConstraints(
+                          maxWidth: FluffyThemes.columnWidth * 2.5),
+                      alignment: Alignment.center,
                       child: Material(
                         borderRadius: const BorderRadius.only(
                           bottomLeft: Radius.circular(AppConfig.borderRadius),

lib/pages/chat/seen_by_row.dart

@@ -1,5 +1,6 @@
 import 'package:flutter/material.dart';
 
+import 'package:fluffychat/config/themes.dart';
 import 'package:fluffychat/pages/chat/chat.dart';
 import 'package:fluffychat/utils/room_status_extension.dart';
 import 'package:fluffychat/widgets/avatar.dart';
@@ -27,11 +28,11 @@ class SeenByRow extends StatelessWidget {
                   Matrix.of(context).client.userID
           ? Alignment.topRight
           : Alignment.topLeft,
-      padding: const EdgeInsets.only(
-        left: 16,
-        right: 16,
-        bottom: 4,
-      ),
+      padding: const EdgeInsets.only(bottom: 4),
+      child: Container(
+        constraints:
+            const BoxConstraints(maxWidth: FluffyThemes.columnWidth * 2.5),
+        alignment: Alignment.center,
         child: Wrap(
           spacing: 4,
           children: [
@@ -64,6 +65,7 @@ class SeenByRow extends StatelessWidget {
               ),
           ],
         ),
+      ),
     );
   }
 }