fix: do nothing if switch to current app

[cainiaokan]

Description

bug reproduction steps:

1. enter any app detail page
2. click header app switch nav button to show the app droplist
3. try switch to the currently active app
4. page rendering stuck at loading state

reason:
web/app/components/header/nav/nav-selector/index.tsx - switch app click handler set app as emptry by calling setAppDetail()
web/app/components/app/configuration/index.tsx - useEffect won't rerun coz the dependency [appId] hasn't change

Fixes # (issue)

Type of Change

Please delete options that are not relevant.

• Bug fix (non-breaking change which fixes an issue)

How Has This Been Tested?

switch to current selected app in header nav menu, the page can be rendered properly.

• TODO

Suggested Checklist:

• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• My changes generate no new warnings
• I ran dev/reformat(backend) and cd web && npx lint-staged(frontend) to appease the lint gods
• optional I have made corresponding changes to the documentation
• optional I have added tests that prove my fix is effective or that my feature works
• optional New and existing unit tests pass locally with my changes