[Task]: Add unit tests for JdbcSchemaIOProvider

[aromanenko-dev]

What needs to happen?

To test a basic functionality and avoid breaking changes, like #25061, JdbcSchemaIOProvider should be tested by unit tests.

Issue Priority

Priority: 3 (nice-to-have improvement)

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• Component: Python SDK
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[olalamichelle]

.take-issue

[olalamichelle]

I have opened a PR #28174. There was actually a bug in the SchemaIOProvider that the maxConnections was Short in the config but read back as Integer. I fixed it also added unit tests for it to prevent similar breaking changes described in this ticket.

[olalamichelle]

.close-issue

[aromanenko-dev]

@olalamichelle Thanks for taking care of this!