fix: setting zeebe image tag shouldnt disable broker profile

[bkenez]

Which problem does the PR fix?

Closes: #4338

What's in this PR?

Before the fix:

# Without zeebe values
active: "broker,identity,operate,tasklist,consolidated-auth"  

# With zeebe.image.tag=bla  
active: "identity,operate,tasklist,consolidated-auth"  

After the fix:

# Without zeebe values
active: "broker,identity,operate,tasklist,consolidated-auth"  

# With zeebe.image.tag=bla
active: "broker,identity,operate,tasklist,consolidated-auth" 

The fix ensures that setting zeebe.image.tag (or any other zeebe.* value) doesn't accidentally trigger the compatibility helper to disable the broker profile.

Checklist

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