Revert ImTextureID to void*

imgui.h

@@ -252,7 +252,7 @@ typedef int ImGuiWindowFlags;       // -> enum ImGuiWindowFlags_     // Flags: f
 // - You can make this a structure with various constructors if you need. You will have to implement ==/!= operators.
 // - (note: before v1.91.4 (2024/10/08) the default type for ImTextureID was void*. Use intermediary intptr_t cast and read FAQ if you have casting warnings)
 #ifndef ImTextureID
-typedef ImU64 ImTextureID;          // Default: store a pointer or an integer fitting in a pointer (most renderer backends are ok with that)
+typedef void* ImTextureID;          // Default: store a pointer or an integer fitting in a pointer (most renderer backends are ok with that)
 #endif
 
 // ImDrawIdx: vertex index. [Compile-time configurable type]