Invert shutdown_wait_unfinished_queries

[thevar1able]

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):

Invert condition for shutdown_wait_unfinished_queries setting

[robot-ch-test-poll4]

This is an automated comment for commit 4b43059 with description of existing statuses. It's updated for the latest CI running
The full report is available here
The overall status of the commit is 🟡 pending

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[alexey-milovidov]

Can we write an integration test?
It is not 100% necessary btw.

[nikitamikhaylov]

There will be hard to write a reliable test...