ENH: [STUDIO-2773] block notification

Change-Id: I97b556b5ad1f25d8c4118e1f271c0756084d83cc

src/imgui/imconfig.h

@@ -193,6 +193,10 @@ namespace ImGui
     const wchar_t CollapseBtn     = 0x0831;
     const wchar_t RevertBtn       = 0x0832;
 
+    const wchar_t CloseBlockNotifButton      = 0x0833;
+    const wchar_t CloseBlockNotifHoverButton = 0x0834;
+    const wchar_t BlockNotifErrorIcon        = 0x0835;
+
 //    void MyFunction(const char* name, const MyMatrix44& v);
 }