Fix offset in renderer directivity, found in BASOP. This syncs the code with the BASOP

• Related issues: #1377 (closed)
• Requested reviewers:

Reason why this change is needed

• The input ID enumeration includes other sources and cannot be used to identify ISMs.

Description of the change

• Add an object id in inputIsm struct.

Affected operating points

• Non-BE for TD renderer with multiple directivity settings

Related to #1377 (closed)