Tables: context menu now present columns in display order. (#9312)

docs/CHANGELOG.txt

@@ -93,6 +93,7 @@ Other Changes:
     using the idiom of not applying edits before IsItemDeactivatedAfterEdit().
     (#9308, #8915, #8273)
 - Tables:
+  - Context menu now presents columns in display order. (#9312)
   - Fixed and clarified the behavior of using TableSetupScrollFreeze() with columns>1,
     and where some of the columns within that range were Hidable.
     - Before: TableSetupScrollFreeze(N, 0) made the first N _visible_ columns

imgui_tables.cpp

@@ -3574,8 +3574,9 @@ void ImGui::TableDrawDefaultContextMenu(ImGuiTable* table, ImGuiTableFlags flags
         want_separator = true;
 
         PushItemFlag(ImGuiItemFlags_AutoClosePopups, false);
-        for (int column_n = 0; column_n < table->ColumnsCount; column_n++)
+        for (int order_n = 0; order_n < table->ColumnsCount; order_n++)
         {
+            const int column_n = table->DisplayOrderToIndex[order_n];
             ImGuiTableColumn* column = &table->Columns[column_n];
             if (column->Flags & ImGuiTableColumnFlags_Disabled)
                 continue;