opcua: handle nsu in nodeId #3

Job	Run time
eslint	1m 25s
Check coding style	8s
Check version consistency of packages	4s
Tests (macos-latest, Node 18.x)	4m 18s
Tests (macos-latest, Node 20.x)	3m 44s
Tests (macos-latest, Node 22.x)	2m 52s
Tests (ubuntu-latest, Node 18.x)	2m 8s
Tests (ubuntu-latest, Node 20.x)	2m 1s
Tests (ubuntu-latest, Node 22.x)	2m 45s
Tests (windows-latest, Node 18.x)	4m 46s
Tests (windows-latest, Node 20.x)	4m 43s
Tests (windows-latest, Node 22.x)	4m 44s
	33m 38s

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