fix: error message with DROP DELETE TOPIC is invalid

[spena]

Description

Fixes the following error message:

ksql> drop stream s2 delete topic;
Could not delete the corresponding kafka topic: s2
Caused by: Authorization denied to Delete on topic(s): [t2]

It used to display the topicName, and now displays the stream name. Now it is displayed as:

ksql> drop stream s2 delete topic;
Could not delete the corresponding kafka topic: t2
Caused by: Authorization denied to Delete on topic(s): [t2]

Testing done

Describe the testing strategy. Unit and integration tests are expected for any behavior changes.

Reviewer checklist

• Ensure docs are updated if necessary. (eg. if a user visible feature is being added or changed).
• Ensure relevant issues are linked (description should include text like "Fixes #")

[stevenpyzhang]

Woops, that was my change, thanks for the catch @spena ! LGTM (side note: would it be possible to add a unit test to check the content of the message?)