JS Client: Uri inference in invocation

[krisbitney]

Our invoke function in the JS client looks like this:

 public async invoke<TData = unknown, TUri extends Uri | string = string>(
 options: InvokerOptions<TUri>
 ): Promise<InvokeResult<TData>> {
 return super.invoke({
 ...options,
 uri: Uri.from(options.uri),
 });
 }

There is a problem in how the generics are defined, in which if we pass a generic for the result type, the Uri must be a string (unless its defined). For example, if we do this:

 const t = await client.invoke<String>({
 uri: new Uri("wrap/polywrap"),
 method: "h"
 })
}

It will complain because the uri is of type Uri, instead of String we should support that the default is Uri