Fix bug with intDiv for decimal arguments

[yariks5s]

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):

Fixes bug with for function intDiv with decimal arguments. Fixes #56414.

Documentation entry for user-facing changes

• Documentation is written (mandatory for new features)

Information about CI checks: https://clickhouse.com/docs/en/development/continuous-integration/

[robot-ch-test-poll]

This is an automated comment for commit cfa198c with description of existing statuses. It's updated for the latest CI running

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[Avogar]

Seems like 00700_decimal_compare.sql test crashed server in fasttest