[BUG] `source` parameter is not a global parameter for all endpoints

[karenyrx]

What is the bug?

The global parameter source https://github.com/opensearch-project/opensearch-api-specification/blob/main/spec/_global_parameters.yaml#L28 is not supported for all APIs, for example, Scroll

How can one reproduce the bug?

GET _search/scroll?source will return an error

What is the expected behavior?

source should not be a global parameter in the spec.

What is your host/environment?

OS 2.16

Do you have any screenshots?

Do you have any additional context?

N/A