Fix: sync ImTextureData with upstream ImGui layout

[eyalezer]

Sync ImTextureData with upstream ImGui layout

This syncs the ImTextureData struct in Source/Shared/ImguiInterface.hpp with the current ImGui layout (matching ocornut/imgui@b335bf4).

Why this matters

The upstream ImGui ImTextureData struct gained a new QueueUserData field:

struct ImTextureData {
    int UniqueID;
    ImTextureStatus Status;
    void* BackendUserData;
    void* QueueUserData;   // <-- added in upstream
    ImTextureID TexID;
    ...
};

Because NRI's copy of this struct was missing that field, the two layouts drifted apart. The field ordering and offsets no longer match, which corrupts the memory layout when ImGui and NRI share this struct. This breaks using ImGui textures with NRI.

This change adds the missing QueueUserData field back, restoring the correct layout.

[dzhdanNV]

Thanks. I will merge it today (and update all my stuff). Which ImGui version did add QueueUserData? This comment should be updated too: https://github.com/NVIDIA-RTX/NRI/blob/main/Include/Extensions/NRIImgui.h#L11.

[eyalezer]

@dzhdanNV ahh totally missed that comment.. let me fix it

the version is: v1.92.9

[eyalezer]

@dzhdanNV - Done ✅

[dzhdanNV]

Thanks! Merged.