[BETA] [EuiTable/EuiBasicTable/EuiInMemoryTable] `scrollableInline` prop

### Overview

`scrollableInline prop on EuiTable/EuiBasicTable/EuiInMemoryTable` originates from a feature request: https://github.com/elastic/eui/issues/9392. It has been introduced on this PR: https://github.com/elastic/eui/pull/9416 and is currently in **beta** due to testing it in production environments and across various table combinations. This issue is intended to track the progress and necessary actions to transition the functionality out of beta status and into general availability.

### Feature Description

`scrollableInline prop on EuiTable/EuiBasicTable/EuiInMemoryTable` enables users to scroll horizontally (inline) when the table contents overflow.

https://eui.elastic.co/docs/components/tables/basic/#inline-scrolling

### Next Steps

To facilitate the transition, we should:

- [ ] Analyze user feedback from beta testers
- [ ] Address any reported bugs or issues
- [ ] Update documentation for full release
- [ ] Define performance benchmarks (if applicable)