[Hotfix][AMS] Unify authentication handling for dashboard requests

[xxubai]

Why are the changes needed?

Dashboard requests containing the legacy single-page token parameter follow a separate authentication path. This causes authentication behavior to differ between dashboard requests.

This change removes the legacy single-page token handling and ensures that all dashboard requests use the standard authentication flow.

Brief change log

• Route all dashboard requests through the standard request authentication handler.
• Remove the legacy single-page token generation and validation methods.
• Remove the unused table-page token controller method.
• Add tests covering catalog, terminal, and web-session authentication behavior.

How was this patch tested?

• Add some test cases that check the changes thoroughly including negative and positive cases if possible

• Add screenshots for manual tests if appropriate

• Run test locally before making a pull request

[zhoujinsong]

LGTM.

Thanks for the fix.