chore: if the bool field is null set the inlined boolean as null

Author: eduardoramirez

hollow/src/main/java/com/netflix/hollow/core/write/objectmapper/HollowObjectTypeMapper.java

@@ -631,7 +631,9 @@ public void copy(GenericHollowObject rec, Object pojo) {
                     unsafe.putObject(pojo, fieldOffset, rec.getBytes(fieldName));
                     break;
                 case INLINED_BOOLEAN:
-                    unsafe.putObject(pojo, fieldOffset, Boolean.valueOf(rec.getBoolean(fieldName)));
+                    if (!rec.isNull(fieldName)) {
+                        unsafe.putObject(pojo, fieldOffset, Boolean.valueOf(rec.getBoolean(fieldName)));
+                    }
                     break;
                 case INLINED_INT:
                     int inlinedIntValue = rec.getInt(fieldName);