chore: Follow up input bar padding

lib/pages/chat/chat_view.dart

@@ -272,11 +272,7 @@ class ChatView extends StatelessWidget {
                           if (controller.room.canSendDefaultMessages &&
                               controller.room.membership == Membership.join)
                             Container(
-                              margin: EdgeInsets.only(
-                                bottom: bottomSheetPadding,
-                                left: bottomSheetPadding,
-                                right: bottomSheetPadding,
-                              ),
+                              margin: EdgeInsets.all(bottomSheetPadding),
                               constraints: const BoxConstraints(
                                 maxWidth: FluffyThemes.columnWidth * 2.5,
                               ),

lib/widgets/connection_status_header.dart

@@ -47,7 +47,7 @@ class ConnectionStatusHeaderState extends State<ConnectionStatusHeader> {
       curve: FluffyThemes.animationCurve,
       height: hide ? 0 : 36,
       clipBehavior: Clip.hardEdge,
-      decoration: BoxDecoration(color: Theme.of(context).colorScheme.surface),
+      decoration: const BoxDecoration(color: Colors.transparent),
       padding: const EdgeInsets.symmetric(horizontal: 12),
       child: Row(
         mainAxisAlignment: MainAxisAlignment.center,