fix: add a key prop for the table column

[haideralsh]

Description

This change allows the user to pass a key prop when a dataKey is not applicable for that given column. This could be used for columns that compose data from multiple columns, actions, or decorative columns.

Similar to the dataKey, The key needs to be unique.

Linked issue

Fixes #1292

Changes include

• [ ] breaking change: a change that is not backwards-compatible and/or changes current functionality
• [x] fix: a non-breaking change that solves an issue
• [ ] feature: a non-breaking change that adds functionality
• [ ] chore: contains no changes affecting the library, such as documentation or test updates

Feature checklist

• [x] Appropriate tests have been added
• [ ] Documentation has been updated
• [ ] Accessibility has been considered

[github-actions[bot]]

:tada: This PR is included in version 8.15.3 :tada:

The release is available on:

• GitHub release
• npm package (@latest dist-tag)

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