When clicking the **Add File** button on the knowledge base document page, the left sidebar navigation switches to the global main menu of the Dify homepage, instead of retaining the sidebar menu belonging to the knowledge base detail page.

### Self Checks

- [x] I have read the [Contributing Guide](https://github.com/langgenius/dify/blob/main/CONTRIBUTING.md) and [Language Policy](https://github.com/langgenius/dify/issues/1542).
- [x] This is only for bug report, if you would like to ask a question, please head to [Discussions](https://github.com/langgenius/dify/discussions/categories/general).
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### Dify version

1.17.0

### Cloud or Self Hosted

Self Hosted (Docker)

### Steps to reproduce

When clicking the **Add File** button on the knowledge base document page, the left sidebar navigation switches to the global main menu of the Dify homepage, instead of retaining the sidebar menu belonging to the knowledge base detail page.

### ✔️ Expected Behavior

When opening the Add File modal on the knowledge base detail page, the left sidebar menu should remain the knowledge base detail sidebar instead of switching to the global main navigation menu.

### ❌ Actual Behavior

_No response_

Reproduce the issue on the knowledge base document page in the self-hosted Dify 1.17.0 setup by opening Add File. Trace the Add File modal and the sidebar navigation behavior; done means the knowledge base detail sidebar remains visible instead of switching to the global homepage menu.

Written by the indexing model from the issue text.