[NFC] TypeLowering: Use lowered type in copy into.

Instead of digging the current state of address lowering out of the
builder's module, just use the LoweredType whose value category tracks
that state.

Author: nate-chandler

lib/SIL/IR/TypeLowering.cpp

@@ -1950,7 +1950,7 @@ namespace {
     void emitCopyInto(SILBuilder &B, SILLocation loc,
                       SILValue src, SILValue dest, IsTake_t isTake,
                       IsInitialization_t isInit) const override {
-      if (B.getModule().useLoweredAddresses()) {
+      if (LoweredType.isAddress()) {
         B.createCopyAddr(loc, src, dest, isTake, isInit);
       } else {
         SILValue value = emitLoadOfCopy(B, loc, src, isTake);