Fix remote invocation failure on EDOObject wrapped EDOWeakObject.
EDOWeakObject forwards everything to -forwardTargetForMethodSelector: without implementing -methodSignatureForSelector:, which causes EDOObject throwing exceptions when it tries to fetch method signature for a wrapped EDOWeakObject.
To avoid the similar bug being caused by other NSProxy(s), this exception will be handled by EDO messages by looking up the -forwardTargetForMethodSelector: firstly to determine which object the -methodSignatureForSelector: will be casted to.
Fix remote invocation failure on EDOObject wrapped EDOWeakObject.
EDOWeakObject forwards everything to -forwardTargetForMethodSelector: without implementing -methodSignatureForSelector:, which causes EDOObject throwing exceptions when it tries to fetch method signature for a wrapped EDOWeakObject.
To avoid the similar bug being caused by other NSProxy(s), this exception will be handled by EDO messages by looking up the -forwardTargetForMethodSelector: firstly to determine which object the -methodSignatureForSelector: will be casted to.