Add `--salt-overlayable-rangeSelection` to theme next

[origami-z]

The token is only used in ag grid theme, test with theme next enabled

3517

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🦋 Changeset detected

Latest commit: 5a6b6f4d6e35b151cecb9d9c70c6f495bbd27163

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

| Name | Type | | -------------- | ----- | | @salt-ds/theme | Patch |

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