[ownership] Change SILUndef to return Any ownership for trivial values and owned for non-trivial values.

This is in preparation for verifying that when ownership verification is enabled
that only enums and trivial values can have any ownership. I am doing this in
preparation for eliminating ValueOwnershipKind::Trivial.

rdar://46294760

lib/SILOptimizer/LoopTransforms/COWArrayOpt.cpp

@@ -1619,7 +1619,7 @@ protected:
   }
 
   void updateSSAForm() {
-    SILSSAUpdater SSAUp;
+    SILSSAUpdater SSAUp(StartBB->getParent()->getModule());
     for (auto *origBB : originalPreorderBlocks()) {
       // Update outside used phi values.
       for (auto *arg : origBB->getArguments())