Fix cosineDistance crash with Nullable

[Algunenano]

Changelog category (leave one):

• Bug Fix (user-visible misbehavior in an official stable release)

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

• Fix cosineDistance crash with Nullable

Documentation entry for user-facing changes

Closes #59596

[robot-clickhouse]

This is an automated comment for commit 8c984c5 with description of existing statuses. It's updated for the latest CI running

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Check name	Description	Status
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