feat: sync IME status to UI on thread focus and punctuation switch

src/Thread/ThreadFocusSink.cpp

@@ -13,6 +13,8 @@
 
 STDAPI CMetasequoiaIME::OnSetThreadFocus()
 {
+    OutputDebugString(fmt::format(L"CMetasequoiaIME::OnSetThreadFocus").c_str());
+    PostMessage(_msgWndHandle, WM_ThreadFocus, 0, 0);
     if (_pCandidateListUIPresenter)
     {
         ITfDocumentMgr *pCandidateListDocumentMgr = nullptr;
@@ -39,6 +41,7 @@ STDAPI CMetasequoiaIME::OnSetThreadFocus()
 
 STDAPI CMetasequoiaIME::OnKillThreadFocus()
 {
+    OutputDebugString(fmt::format(L"CMetasequoiaIME::OnKillThreadFocus").c_str());
     if (_pCandidateListUIPresenter)
     {
         ITfDocumentMgr *pCandidateListDocumentMgr = nullptr;