fix(topic): condition should check if topic name is empty

[craicoverflow]

The topic create command should be checking if the topic name is "" when in a non-TTY session.

Verification Steps

Create a topic in a detached terminal session:

true | (setsid ./rhoas kafka topic create --name topic2) 2>&1

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation change
• Other (please specify)

Checklist

• Documentation added for the feature
• CI and all relevant tests are passing
• Code Review completed
• Verified independently by reviewer