fix(web): preserve peer card clicks with semantics enabled (#16709)

* fix(web): preserve peer card clicks with semantics enabled

Give the More menu semantic tap and double-click actions, and expose multi-selection through separate checkboxes. Exclude redundant outer desktop web tap semantics while preserving card-body double-click connections.

Cover mouse single/double clicks and semantic activation under the parent card gesture detector.

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(web): reuse accessible More control in portrait cards

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(web): keep peer More taps immediate and cancellable

Signed-off-by: fufesou <linlong1266@gmail.com>

* fix(web): keep keyboard wrapper out of accessibility focus

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>

flutter/test/peer_card_menu_semantics_test.dart

@@ -0,0 +1,71 @@
+import 'dart:ui' show PointerDeviceKind, SemanticsAction;
+
+import 'package:flutter/gestures.dart' show kSecondaryMouseButton;
+import 'package:flutter/material.dart';
+import 'package:flutter/services.dart';
+import 'package:flutter_hbb/common/widgets/peer_card.dart';
+import 'package:flutter_test/flutter_test.dart';
+
+void main() {
+  const doubleClickInterval = Duration(milliseconds: 75);
+  const dragOffset = Offset(150, 0);
+  // Keep pointer cases semantics-off to cover parent/child gesture competition.
+  // VM taps bypass browser click-to-semantics conversion; verify that in a browser.
+  for (final action in ['physical clicks', 'semantic tap', 'keyboard']) {
+    testWidgets('More $action opens once without connecting the card',
+        (tester) async {
+      var opened = 0;
+      var connected = 0;
+      await tester.pumpWidget(MaterialApp(
+        home: Material(
+          child: GestureDetector(
+            excludeFromSemantics: true,
+            onTap: () {},
+            onDoubleTap: () => connected++,
+            onLongPress: () {},
+            child: Builder(builder: (context) {
+              return Center(
+                  child: build_more(context, onTap: () {
+                opened++;
+                showMenu<void>(
+                  context: context,
+                  position: RelativeRect.fill,
+                  items: const [PopupMenuItem(child: Text('Connect'))],
+                );
+              }));
+            }),
+          ),
+        ),
+      ));
+      final button = find.byIcon(Icons.more_vert);
+      final position = tester.getCenter(button);
+      if (action == 'semantic tap') {
+        final node = tester.getSemantics(button);
+        node.owner!.performAction(node.id, SemanticsAction.tap);
+      } else if (action == 'keyboard') {
+        await tester.sendKeyEvent(LogicalKeyboardKey.tab);
+        await tester.sendKeyEvent(LogicalKeyboardKey.enter);
+      } else {
+        await tester.tapAt(position,
+            kind: PointerDeviceKind.mouse, buttons: kSecondaryMouseButton);
+        await tester.pumpAndSettle();
+        expect(opened, 0, reason: 'A secondary click must not open More');
+        await tester.dragFrom(position, dragOffset,
+            kind: PointerDeviceKind.mouse);
+        await tester.pumpAndSettle();
+        expect(opened, 0, reason: 'Dragging out must cancel the More tap');
+        await tester.tapAt(position, kind: PointerDeviceKind.mouse);
+      }
+      expect(opened, 1,
+          reason: 'More must not wait for a possible double click');
+      await tester.pump();
+      if (action == 'physical clicks') {
+        await tester.pump(doubleClickInterval);
+        await tester.tapAt(position, kind: PointerDeviceKind.mouse);
+      }
+      await tester.pumpAndSettle();
+      expect({'menu': opened, 'connection': connected},
+          {'menu': 1, 'connection': 0});
+    }, semanticsEnabled: action != 'physical clicks');
+  }
+}