Changes required for regression in mutable scope

Description of problem:
Based on the discussion in https://issues.redhat.com/browse/OCPBUGS-24044
and the discussion in this slack [https://redhat-internal.slack.com/archives/CBWMXQJKD/p1700510945375019|thread] we need to update our CI and some of the work done for mutable scope in NE-621.

Specifically, we need to

• modify TestScopeChange and TestUnmanagedDNSToManagedDNSInternalIngressController to delete the service on all platforms, as toggling scope is no longer recommended.
• modify any special behavior added for platformsWithMutableScope.

Version-Release number of selected component (if applicable):

4.15
    

How reproducible:

100%
    

Steps to Reproduce:

  1. Run CI TestUnmanagedDNSToManagedDNSInternalIngressController
  2. Observe failure in unmanaged-migrated-internal  
    

Actual results:

CI tests fail.
    

Expected results:

CI tests shouldn't fail.
    

Additional info:

This is a change from past behavior, as reported in https://issues.redhat.com/browse/OCPBUGS-24044. Further discussion revealed that the new behavior is currently expected but could be restored in the future. Notes to SRE and release notes are needed for this change to behavior.