Method TableFixDisplayOrder

include/imgui/imgui_tables.cpp:3906–3919

Fix invalid display order data: compact values (0,1,3 -> 0,1,2); preserve relative order (0,3,1 -> 0,2,1); deduplicate (0,4,1,1 -> 0,3,1,2)

// Fix invalid display order data: compact values (0,1,3 -> 0,1,2); preserve relative order (0,3,1 -> 0,2,1); deduplicate (0,4,1,1 -> 0,3,1,2)
void ImGui::TableFixDisplayOrder(ImGuiTable* table)
{
    ImGuiContext& g = *GImGui;
    g.TempBuffer.reserve((int)(sizeof(ImGuiTableFixDisplayOrderColumnData) * table->ColumnsCount)); // FIXME: Maybe wrap those two lines as a helper.
    ImGuiTableFixDisplayOrderColumnData* fdo_columns = (ImGuiTableFixDisplayOrderColumnData*)(void*)g.TempBuffer.Data;
    for (int n = 0; n < table->ColumnsCount; n++)
    {
        fdo_columns[n].Idx = (ImGuiTableColumnIdx)n;
        fdo_columns[n].Table = table;
    }
    ImQsort(fdo_columns, (size_t)table->ColumnsCount, sizeof(ImGuiTableFixDisplayOrderColumnData), TableFixDisplayOrderComparer);
    for (int n = 0; n < table->ColumnsCount; n++)
        table->Columns[fdo_columns[n].Idx].DisplayOrder = (ImGuiTableColumnIdx)n;
}

static void TableSettingsHandler_ClearAll(ImGuiContext* ctx, ImGuiSettingsHandler*)
{