Show http method in the connector builder test panel request tab

[clnoll]

What

Adds the HTTP method (GET/PUT/etc..) of the outgoing request to the test panel request tab.

Fixes #19622.

How

1. Updated the HttpRequest object in openapi.yaml to include an http_method property, whose values can be GET, POST, PUT, or PATCH, per the airbyte-cdk's list of BODY_REQUEST_METHODS for sources.
2. Regenerated the models in http_request.py by running ./gradlew :airbyte-connector-builder-server:generateOpenApiPythonServer from the airbyte repo.
3. Updated default_api.py's _create_request_from_log_message method to include the http_method key from the request.

Note: we are currently unable to enforce the enum type specified in the openapi.yml, due to an open issue with python-fastapi's handling of enums. This means that theoretically we could see methods not supported by airbyte-cdk. It looks to me like openapi's default python generator does support enums, but switching our generator felt heavy handed for this simple change. We can revisit later if we start requiring more enums.

Recommended reading order

1. airbyte-connector-builder-server/src/main/openapi/openapi.yaml
2. airbyte-connector-builder-server/connector_builder/generated/models/http_request.py
3. airbyte-connector-builder-server/connector_builder/impl/default_api.py
4. airbyte-connector-builder-server/unit_tests/connector_builder/impl/test_default_api.py

🚨 User Impact 🚨

No breaking changes. When submitting a test read request, the user will now see the http method that was used along with other information about the request, in the "Request" tab.

Pre-merge Checklist

Expand the relevant checklist and delete the others.

• Unit tests added and passing.
• Issue acceptance criteria met
• Documentation updated
• PR name follows PR naming conventions
• Code reviews completed

Tests

Unit

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Integration

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Acceptance

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[girarda]

should we make this a required field? I can't imagine a request without an HTTP method

[clnoll]

Makes sense to me @girarda. I made this change. I'm still using .get on the request (with a default "") - I assume that if there is a case where http_method is missing we don't want to throw an error in the UI. But let me know if you think otherwise.