Skip some new specs for reading from a closed socket on Windows

These specs fails with error:

```
Errno::EINVAL: Invalid argument - recvmsg(2)
```

on calling the following methods:

```ruby
client.recvmsg(10)
# or
client.recvmsg_nonblock(10)
```

library/socket/basicsocket/recvmsg_nonblock_spec.rb

@@ -263,26 +263,28 @@
       end
 
       ruby_version_is "3.3" do
-        it "returns nil on a closed stream socket" do
-          ready = false
+        platform_is_not :windows do
+          it "returns nil on a closed stream socket" do
+            ready = false
 
-          t = Thread.new do
-            client = @server.accept
+            t = Thread.new do
+              client = @server.accept
 
-            Thread.pass while !ready
-            client.recvmsg_nonblock(10)
-          ensure
-            client.close if client
-          end
+              Thread.pass while !ready
+              client.recvmsg_nonblock(10)
+            ensure
+              client.close if client
+            end
 
-          Thread.pass while t.status and t.status != "sleep"
-          t.status.should_not be_nil
+            Thread.pass while t.status and t.status != "sleep"
+            t.status.should_not be_nil
 
-          socket = TCPSocket.new('127.0.0.1', @port)
-          socket.close
-          ready = true
+            socket = TCPSocket.new('127.0.0.1', @port)
+            socket.close
+            ready = true
 
-          t.value.should be_nil
+            t.value.should be_nil
+          end
         end
       end
     end

library/socket/basicsocket/recvmsg_spec.rb

@@ -229,21 +229,23 @@
       end
 
       ruby_version_is "3.3" do
-        it "returns nil on a closed stream socket" do
-          t = Thread.new do
-            client = @server.accept
-            client.recvmsg(10)
-          ensure
-            client.close if client
-          end
+        platform_is_not :windows do
+          it "returns nil on a closed stream socket" do
+            t = Thread.new do
+              client = @server.accept
+              client.recvmsg(10)
+            ensure
+              client.close if client
+            end
 
-          Thread.pass while t.status and t.status != "sleep"
-          t.status.should_not be_nil
+            Thread.pass while t.status and t.status != "sleep"
+            t.status.should_not be_nil
 
-          socket = TCPSocket.new('127.0.0.1', @port)
-          socket.close
+            socket = TCPSocket.new('127.0.0.1', @port)
+            socket.close
 
-          t.value.should be_nil
+            t.value.should be_nil
+          end
         end
       end
     end