Restore Android record deserialization fallback in TrackableSerializer

<!-- -->Card-Forge#10343 replaced GameEventProxy with TrackableSerializer but did not
carry forward the readClassDescriptor() override added in <!-- -->Card-Forge#10304.
Android's D8 desugars records to regular classes with computed
serialVersionUIDs, while the JVM hardcodes 0L for records — so every
GameEvent now fails to deserialize on Android clients in cross-platform
network play (visible as "TrackableSerializer: Failed to unwrap event:
... local class incompatible: stream classdesc serialVersionUID = 0,
local class serialVersionUID = ..." warnings).

Re-applies the same pattern used in CObjectInputStream and the deleted
GameEventProxy: when the stream's UID disagrees with the local class
UID, fall through to the local descriptor.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: MostCromulent

forge-gui/src/main/java/forge/gamemodes/net/TrackableSerializer.java

@@ -226,6 +226,23 @@ static class ResolvingInputStream extends ObjectInputStream {
             enableResolveObject(true);
         }
 
+        // Android desugars records to classes with computed serialVersionUID; the JVM keeps records at 0L.
+        // Fall through to the local descriptor when UIDs mismatch.
+        @Override
+        protected ObjectStreamClass readClassDescriptor() throws IOException, ClassNotFoundException {
+            ObjectStreamClass streamDesc = super.readClassDescriptor();
+            try {
+                Class<?> localClass = Class.forName(streamDesc.getName());
+                ObjectStreamClass localDesc = ObjectStreamClass.lookup(localClass);
+                if (localDesc != null && streamDesc.getSerialVersionUID() != localDesc.getSerialVersionUID()) {
+                    return localDesc;
+                }
+            } catch (ClassNotFoundException ignored) {
+                // Class not found locally — fall through to stream descriptor.
+            }
+            return streamDesc;
+        }
+
         @Override
         protected Object resolveObject(Object obj) {
             return resolve(obj, tracker);