mod: 无障碍语义适配

lib/pages/video/detail/reply_new/toolbar_icon_button.dart

@@ -5,6 +5,7 @@ class ToolbarIconButton extends StatelessWidget {
   final Icon icon;
   final String toolbarType;
   final bool selected;
+  final String tooltip;
 
   const ToolbarIconButton({
     super.key,
@@ -12,6 +13,7 @@ class ToolbarIconButton extends StatelessWidget {
     required this.icon,
     required this.toolbarType,
     required this.selected,
+    required this.tooltip,
   });
 
   @override
@@ -20,6 +22,7 @@ class ToolbarIconButton extends StatelessWidget {
       width: 36,
       height: 36,
       child: IconButton(
+        tooltip: tooltip,
         onPressed: onPressed,
         icon: icon,
         highlightColor: Theme.of(context).colorScheme.secondaryContainer,

lib/pages/video/detail/reply_new/view.dart

@@ -192,6 +192,7 @@ class _VideoReplyNewDialogState extends State<VideoReplyNewDialog>
               mainAxisAlignment: MainAxisAlignment.spaceBetween,
               children: [
                 ToolbarIconButton(
+                  tooltip: '输入',
                   onPressed: () {
                     if (toolbarType == 'emote') {
                       setState(() {
@@ -206,6 +207,7 @@ class _VideoReplyNewDialogState extends State<VideoReplyNewDialog>
                 ),
                 const SizedBox(width: 20),
                 ToolbarIconButton(
+                  tooltip: '表情',
                   onPressed: () {
                     if (toolbarType == 'input') {
                       setState(() {