bors 2fe739fcf1 Auto merge of #13591 - epage:namespace, r=weihanglo
feat: Add 'open-namespaces' feature

### What does this PR try to resolve?

This is a step towards #13576

### How should we test and review this PR?

### Additional information
2024-03-15 21:39:18 +00:00
..
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2024-02-20 09:57:03 -08:00
2024-03-14 21:28:14 +08:00