Add bot|user_scopes to context.authorize_result set by SingleTeamAuthorization

[seratch]

This pull request improves the built-in SingleTeamAuthorization middleware to attach bot|user_scopes to Request#Context#AuthorizeResult as MultiTeamsAuthorization does.

Why does this matter? This property is useful specifically when you want to know the issued OAuth token, which is associated with an incoming Slack event request, has sufficient scopes for newly added feature in a Slack app. Here is an example: https://github.com/seratch/ChatGPT-in-Slack/blob/341f50ad00f853009f3c50ff6c3133d6fd0b3dd7/app/bolt_listeners.py#L1053-L1065

Category (place an x in each of the [ ])

• [x] slack_bolt.App and/or its core components
• [x] slack_bolt.async_app.AsyncApp and/or its core components
• [ ] Adapters in slack_bolt.adapter
• [ ] Document pages under /docs
• [ ] Others

Requirements (place an x in each [ ])

Please read the Contributing guidelines and Code of Conduct before creating this issue or pull request. By submitting, you are agreeing to those rules.

• [x] I've read and understood the Contributing Guidelines and have done my best effort to follow them.
• [x] I've read and agree to the Code of Conduct.
• [x] I've run ./scripts/install_all_and_run_tests.sh after making the changes.

[codecov[bot]]

Codecov Report

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

Project coverage is 91.79%. Comparing base (ce27780) to head (866b562).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #1104 +/- ## ========================================== + Coverage 91.77% 91.79% +0.01% ========================================== Files 186 186 Lines 6407 6408 +1 ========================================== + Hits 5880 5882 +2 + Misses 527 526 -1 ```

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[seratch]

Thanks for the reviews!