Await safety uncertain in SwingSet/src/vats/network/network.js in outbound method

[erights]

agoric-sdk/packages/SwingSet/src/vats/network/network.js

Line 466 in a1dedea

const attempt = await protocolImpl.inbound(

The triage at #6219 currently classifies this as

// TODO FIXME This code should be refactored to make this
// await checkably safe, or to remove it, or to record here
// why it is actually safe.

Git blame shows @michaelfig as the one who should probably investigate this, so I'm assigning to them. Feel free to reassign as appropriate of course.