Fixed Interactive OAuth on Azure & updated documentations

[nkvuong]

Changes

• Removed Azure check in interactive OAuth
• Updated Flask with OAuth example
• Updated OAuth documentation

Tests

• [x] make test run locally
• [x] make fmt applied
• [ ] relevant integration tests applied

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 57.69%. Comparing base (a6e3710) to head (8da7659).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #669 +/- ## ======================================= Coverage 57.68% 57.69% ======================================= Files 48 48 Lines 33080 33079 -1 ======================================= + Hits 19083 19084 +1 + Misses 13997 13995 -2 ```

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