Generate multiple columns with UUID

[Joeywzr]

Changelog category (leave one):

• Improvement

Changelog entry (a user-readable short description of the changes that goes to CHANGELOG.md):

Closes #37395

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[alexey-milovidov]

Ok, but it's non-deterministic, so the test will not pass.
Simply check for generateUUIDv4(1) != generateUUIDv4(2).