Fix traverser again

Author: EgorkaKulikov

utbot-framework/src/main/kotlin/org/utbot/engine/Traverser.kt

@@ -1521,14 +1521,14 @@ class Traverser(
             NoImplementors -> {
                 if (!type.isAbstractType) {
                     findConcreteImplementation(addr, type, typeHardConstraint, nullEqualityConstraint)
-                }
+                } else {
+                    mockInfoGenerator?.let {
+                        return createMockedObject(addr, type, it, nullEqualityConstraint)
+                    }
 
-                mockInfoGenerator?.let {
-                    return createMockedObject(addr, type, it, nullEqualityConstraint)
+                    queuedSymbolicStateUpdates += mkFalse().asHardConstraint()
+                    null
                 }
-
-                queuedSymbolicStateUpdates += mkFalse().asHardConstraint()
-                null
             }
         }