Proxy class initializer should use 3-arg `Class.forName` to avoid unnecessary class initialization

`<clinit>` of the generated proxy classes calls 1-arg `Class::forName` to get the parameter types for each method during the process to find all Methods and cache them. This causes the initialization of all parameter types of all methods implemented by the proxy class. It can call the 3-arg `Class.forName` to avoid unnecessary class initialization.