fix(challenge): support pkc spam blocker flow

src/hooks/__tests__/use-publish-post.test.tsx

@@ -76,12 +76,13 @@ describe('usePublishPost', () => {
     expect(latestValue.publishPost).toBe(testState.publishCommentMock);
     expect(latestValue.publishPostOptions).toMatchObject({
       author: { displayName: 'Alice' },
+      communityAddress: 'music.eth',
       content: undefined,
       link: undefined,
       spoiler: true,
-      subplebbitAddress: 'music.eth',
       title: 'Hello world',
     });
+    expect('subplebbitAddress' in latestValue.publishPostOptions).toBe(false);
     expect(typeof latestValue.publishPostOptions.onChallengeVerification).toBe('function');
     expect(typeof latestValue.publishPostOptions.onError).toBe('function');
   });

src/hooks/__tests__/use-publish-reply.test.tsx

@@ -104,14 +104,15 @@ describe('usePublishReply', () => {
     expect(typeof latestValue.publishReply).toBe('function');
     expect(testState.lastPublishOptions).toMatchObject({
       author: { displayName: 'Bob' },
+      communityAddress: 'music.eth',
       content: 'Replying to >>12',
       link: undefined,
       parentCid: 'parent-cid',
       postCid: 'parent-cid',
       quotedCids: ['quoted-cid'],
       spoiler: true,
-      subplebbitAddress: 'music.eth',
     });
+    expect('subplebbitAddress' in (testState.lastPublishOptions || {})).toBe(false);
   });
 
   it('resolves same-board external quote references before triggering publish', async () => {