[BUILD-610] fix: Error when opening deck overview when AnKing destination deck does not exist

[RisingOrange]

When you click on the AnKing deck on the main Anki window, if the deck is installed, but the destination Anki deck does not exist, an NotFoundError error is shown.

Related issues

https://ankihub.atlassian.net/jira/software/c/projects/BUILD/boards/1?selectedIssue=BUILD-610 https://ankihub.sentry.io/issues/5787476509/?project=6546414&referrer=github-pr-bot

Proposed changes

• Check if the destination deck exists in Anki before calling aqt.mw.col.decks.deck_and_child_ids

[sentry-io[bot]]

Suspect Issues

This pull request was deployed and Sentry observed the following issues:

• ‼️ NotFoundError: Your database appears to be in an inconsistent state. Please use the Check Database action. No su... anki._backend in _run_command View Issue

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