flutter_desktop: fix minmax on first click

Signed-off-by: fufesou <shuanglongchen@yeah.net>

flutter/lib/desktop/widgets/tabbar_widget.dart

@@ -176,7 +176,8 @@ typedef TabBuilder = Widget Function(
 typedef LabelGetter = Rx<String> Function(String key);
 
 /// [_lastClickTime], help to handle double click
-int _lastClickTime = DateTime.now().millisecondsSinceEpoch;
+int _lastClickTime =
+    DateTime.now().millisecondsSinceEpoch - kDesktopDoubleClickTimeMilli - 1000;
 
 class DesktopTab extends StatelessWidget {
   final bool showTabBar;