This commit applies the Rome autoformatter to the Node SDK.
These changes are automatically produced. To reproduce these
changes, run `make format` from inside sdk/nodejs.
The `asyncTest` and `assertAsyncThrows` helpers were necessary when originally written, but are no longer needed as Mocha has built-in support for testing async functions that return promises, and Node's `assert.rejects` can be used to assert whether a promise has been rejected.