[BUG]Accelerate Table Flyout not working(Flint Datasource) -expecting dataSourceType

[TackAdam]

What is the bug? For Flint datasources. the "Accelerate Table" flyout button opens a blank page due to dataSourceType being undefined. This is introduced by https://github.com/opensearch-project/dashboards-observability/commit/19d68b2d443458c3fdb1bd0fe035bf823111015b And is shown here https://github.com/opensearch-project/dashboards-observability/blob/b328720c11811d45da9d0594c5c28a18dd8fa2d0/public/components/datasources/components/manage/accelerations/create_accelerations_flyout/selectors/index_type_selector.tsx#L27

How can one reproduce the bug?

1. Go to queryWorkBench and switch to a Flint data source.
2. Click on Accelerate Table
3. The flyout will be blank.

What is the expected behavior? Using a commit prior to this for dashboards-observability such as https://github.com/opensearch-project/dashboards-observability/commit/e5af7eb55f44f8c32c43ee7a86099619e98448b7 works as intended

https://github.com/user-attachments/assets/2dd14f62-0025-4786-8de8-8d0c36ce6b4c

What is your host/environment?

• OS: [e.g. iOS]
• Version [e.g. 22]
• Plugins

Do you have any additional context? queryWorkBench does not pass a dataSourceType and the undefined behavior will cause the flyout to fail.

[dblock]

[Catch All Triage - 1, 2, 3, 4]