fix(FR-1682): remove hardcoded password from noVNC redirect URL (#4657)

resolves ([FR-1682](https://lablup.atlassian.net/browse/FR-1682))
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This addresses the security issue where the password used for authentication during noVNC connections is included in the redirect URL.

Removing the password portion from the URL requires users to manually enter their password when accessing via noVMC.

![image.png](https://app.graphite.com/user-attachments/assets/bf63cef7-77a2-4965-8482-aef3573f21a4.png)

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**Checklist:** (if applicable)

- [ ] Documentation
- [ ] Minium required manager version
- [ ] Specific setting for review (eg., KB link, endpoint or how to setup)
- [ ] Minimum requirements to check during review
- [ ] Test case(s) to demonstrate the difference of before/after

[FR-1682]: https://lablup.atlassian.net/browse/FR-1682?atlOrigin=eyJpIjoiNWRkNTljNzYxNjVmNDY3MDlhMDU5Y2ZhYzA5YTRkZjUiLCJwIjoiZ2l0aHViLWNvbS1KU1cifQ

Author: ironAiken2

resources/app_template.json

@@ -151,7 +151,7 @@
         "name": "novnc",
         "title": "VNC (Web)",
         "category": "6.Desktop Environment",
-        "redirect": "/vnc.html?autoconnect=true&password=backendai",
+        "redirect": "/vnc.html?autoconnect=true",
         "src": "./resources/icons/novnc.svg"
       }
     ],