[BUG] Network MIDI 2.0 implementation uses ProductInstanceId in device id, preventing more than one endpoint from being created for a device and role

[Psychlist1972]

Describe the bug
Because Network MIDI 2.0 currently uses the product instance id of the remote endpoint as the unique identifier in the created Windows device, an attempt to create a second endpoint of the same type (client or host) with the same product instance id will fail.

The fix is not to use the PIID as the unique identifier.

This is using DP9 NAMM Preview 2