Enable new instances of unknown arrays with dynamic sizes

UnknownArrayHandle allows you to create a new instance of a compatible array so that when receiving an array of unknown type, a place to put the output can be created. However, these methods only worked if the number of components in each value could be determined statically at compile time.

However, there are some special ArrayHandles that can define the number of components at runtime. In this case, the ArrayHandle would throw an exception if NewInstanceBasic or NewInstanceFloatBasic was called.

Although rare, this condition could happen when, for example, an array was extracted from an UnknownArrayHandle with ExtractArrayFromComponents or with CastAndCallWithExtractedArray and then the resulting array was passed to a function with arrays passed with UnknownArrayHandle such as ArrayCopy.