chore: Follow up design

lib/pages/chat/chat_event_list.dart

@@ -51,7 +51,7 @@ class ChatEventList extends StatelessWidget {
       child: ListView.custom(
         padding: EdgeInsets.only(
           top: 16,
-          bottom: 0,
+          bottom: 8,
           left: horizontalPadding,
           right: horizontalPadding,
         ),

lib/pages/chat/chat_view.dart

@@ -290,15 +290,14 @@ class ChatView extends StatelessWidget {
                               child: ChatEventList(controller: controller),
                             ),
                           ),
-                          if (controller.showScrollDownButton)
-                            Divider(
-                              height: 1,
-                              color: theme.dividerColor,
-                            ),
                           if (controller.room.canSendDefaultMessages &&
                               controller.room.membership == Membership.join)
                             Container(
-                              margin: EdgeInsets.all(bottomSheetPadding),
+                              margin: EdgeInsets.only(
+                                bottom: bottomSheetPadding,
+                                left: bottomSheetPadding,
+                                right: bottomSheetPadding,
+                              ),
                               constraints: const BoxConstraints(
                                 maxWidth: FluffyThemes.columnWidth * 2.5,
                               ),

lib/pages/chat_list/chat_list_item.dart

@@ -339,7 +339,7 @@ class ChatListItem extends StatelessWidget {
                                         : snapshot.data ??
                                             L10n.of(context).emptyChat,
                                     softWrap: false,
-                                    maxLines: 1,
+                                    maxLines: room.hasNewMessages ? 2 : 1,
                                     overflow: TextOverflow.ellipsis,
                                     style: TextStyle(
                                       fontWeight: unread || room.hasNewMessages