fix(polls): scope answers to active room poll

Require poll answer, cancel, and question-data packets to match the poll configured on the caller's current room. Previously a crafted packet could target any loaded poll id and submit the final question directly, including badge-reward polls, without being in a room where that poll was active.

Keep word quiz handling null-safe and add a contract test covering current-room poll scoping for all poll handlers.

Emulator/src/test/java/com/eu/habbo/messages/incoming/polls/PollRoomScopeContractTest.java

@@ -0,0 +1,33 @@
+package com.eu.habbo.messages.incoming.polls;
+
+import org.junit.jupiter.api.Test;
+
+import java.nio.file.Files;
+import java.nio.file.Path;
+
+import static org.junit.jupiter.api.Assertions.assertTrue;
+
+class PollRoomScopeContractTest {
+    @Test
+    void pollHandlersRequireMatchingCurrentRoomPoll() throws Exception {
+        assertRequiresMatchingRoomPoll("AnswerPollEvent.java");
+        assertRequiresMatchingRoomPoll("CancelPollEvent.java");
+        assertRequiresMatchingRoomPoll("GetPollDataEvent.java");
+    }
+
+    private void assertRequiresMatchingRoomPoll(String fileName) throws Exception {
+        String source = Files.readString(Path.of("src/main/java/com/eu/habbo/messages/incoming/polls/" + fileName));
+        int packetPollId = source.indexOf("int pollId = this.packet.readInt();");
+        int pollLookup = source.indexOf("getPoll(pollId)");
+
+        assertTrue(packetPollId >= 0, fileName + " must read the poll id from the packet");
+        assertTrue(pollLookup >= 0, fileName + " must look up the requested poll explicitly");
+
+        String guardedSection = source.substring(packetPollId, pollLookup);
+
+        assertTrue(guardedSection.contains("getCurrentRoom()"),
+                fileName + " must bind poll actions to the caller's current room");
+        assertTrue(guardedSection.contains("room == null || room.getPollId() != pollId"),
+                fileName + " must reject poll ids that are not active in the current room");
+    }
+}