Update OSLogFullOptTest for TargetConstantFolding.
The difference is that these bitcast operations are no longer sunk to their uses:
%5 = bitcast %swift.refcounted* %1 to %swift.opaque*
The reason is that TargetConstantFolding removes a conditional branch. Then CodeSinking no longer sinks:
%20 = struct $String (%19 : $_StringGuts)
