always block desktop settings page if video connection exists (#10224)

1. Always block desktop settings page if video connection exists, both mouse event and key event are blocked..
2. Server control page always block key event.

Signed-off-by: 21pages <sunboeasy@gmail.com>

flutter/lib/common.dart

@@ -2809,7 +2809,7 @@ Widget buildRemoteBlock(
         onExit: (event) => block.value = false,
         child: Stack(children: [
           // scope block tab
-          FocusScope(child: child, canRequestFocus: !block.value),
+          preventMouseKeyBuilder(child: child, block: block.value),
           // mask block click, cm not block click and still use check_click_time to avoid block local click
           if (mask)
             Offstage(
@@ -2821,6 +2821,11 @@ Widget buildRemoteBlock(
       ));
 }
 
+Widget preventMouseKeyBuilder({required Widget child, required bool block}) {
+  return ExcludeFocus(
+      excluding: block, child: AbsorbPointer(child: child, absorbing: block));
+}
+
 Widget unreadMessageCountBuilder(RxInt? count,
     {double? size, double? fontSize}) {
   return Obx(() => Offstage(