[CTF][SHDOCVW] fix gcc 15 -Werror=overloaded-virtual and uninitialized member (#8785)

Fix overloaded-virtual hiding errors and uninitialized m_dwFlags in ctf and shdocvw for GCC 15

base/ctf/cicero/cicuif.h

@@ -570,6 +570,7 @@ public:
     STDMETHOD_(void, OnSetFocus)(HWND hWnd) { }
     STDMETHOD_(void, OnKillFocus)(HWND hWnd) { }
     STDMETHOD_(void, OnNotify)(HWND hWnd, WPARAM wParam, LPARAM lParam) { }
+    using CUIFObject::OnTimer;
     STDMETHOD_(void, OnTimer)(WPARAM wParam) { }
     STDMETHOD_(void, OnSysColorChange)() { }
     STDMETHOD_(void, OnEndSession)(HWND hWnd, WPARAM wParam, LPARAM lParam) { }

base/ctf/msctfime/profile.cpp

@@ -12,7 +12,7 @@ WINE_DEFAULT_DEBUG_CHANNEL(msctfime);
 /// @implemented
 CicProfile::CicProfile()
 {
-    m_dwFlags &= 0xFFFFFFF0;
+    m_dwFlags = 0;
     m_cRefs = 1;
     m_pIPProfiles = NULL;
     m_pActiveLanguageProfileNotifySink = NULL;

base/ctf/msutb/msutb.cpp

@@ -1283,6 +1283,7 @@ public:
     CLBarInatItem(DWORD dwThreadId);
 
     STDMETHOD(InitMenu)(ITfMenu *pMenu) override;
+    using CLBarItemButtonBase::OnMenuSelect;
     STDMETHOD(OnMenuSelect)(INT nCommandId);
     STDMETHOD(GetIcon)(HICON *phIcon) override;
     STDMETHOD(GetText)(BSTR *pbstr) override;

dll/win32/shdocvw/mrulist.cpp

@@ -734,6 +734,7 @@ protected:
     IShellFolder *m_pShellFolder = NULL;    // The shell folder
 
     BOOL _InitLate();
+    using CMruBase::_IsEqual;
     BOOL _IsEqual(SLOTITEMDATA *pItem, LPCVOID pvData, UINT cbData);
     DWORD _DeleteValue(LPCWSTR pszValue) override;