Fix delete behavior in Cosmos adapter

[brfrn169]

Description

This PR fixes the delete behavior in the Cosmos adapter. Currently, if we attempt to delete a non-existent record, the Cosmos adapter throws an ExecutionException. This behavior is inconsistent with other adapters. This PR adjusts it to ensure consistent behavior across adapters.

Related issues and/or PRs

N/A

Changes made

• Stop throwing an exception when attempting to delete a non-existent record in the Cosmos adapter.

Checklist

• I have commented my code, particularly in hard-to-understand areas.
• I have updated the documentation to reflect the changes.
• Any remaining open issues linked to this PR are documented and up-to-date (Jira, GitHub, etc.).
• Tests (unit, integration, etc.) have been added for the changes.
• My changes generate no new warnings.
• Any dependent changes in other PRs have been merged and published.

Additional notes (optional)

N/A

Release notes

Fixed the behavior when deleting a non-existing record in the Cosmos adapter.

[komamitsu]

LGTM, thank you!

[feeblefakie]

LGTM! Thank you!