AUDIT-26: Exclude abstract classes from audited entity validation

[shlok612]

🛠️ Description

This PR fixes AUDIT-26 by excluding abstract and base classes from the audited entity validation logic.

❌ Problem

Abstract classes like BaseOpenmrsData and BaseOpenmrsMetadata were being included in the entity selection dropdown. These classes are not audited, leading to NotAuditedException at runtime.

✅ Solution

Added a filter to exclude abstract classes using Modifier.isAbstract() during validation.

🔍 Changes

• Added filter to remove abstract classes from the entity list
• Prevents invalid entity selection and runtime errors

📌 Impact

• Fixes dropdown issue
• Prevents application crashes
• Ensures only valid audited entities are processed

[shubhangiisinghh]

Could we add a test case that confirms abstract classes are filtered out ?
There is no test added probably. A unit test that verifies abstract classes would make this PR complete I feel.

[shlok612]

Could we add a test case that confirms abstract classes are filtered out ? There is no test added probably. A unit test that verifies abstract classes would make this PR complete I feel.

Thanks for the suggestion! I’ll add a unit test to verify that abstract classes are excluded from entity validation.