Fix a race condition that could cause the app to think that it is still
syncing even after it has completed and as a result being stuck
reporting 100% syncing during the onboarding process.
`startGrpc` can take some time to fully establish and verify that th
connection is set up as we wait for a successful result from a call to
`getInfo`.
Previously, we would send the `lndSyncing` message to the app only after
`startGrpc` was complete. However, if the syncing process had actually
completed before `startGrpc` then we would first notify that syncing had
completed, only to then notify that it had started after it had already
completed.
In this fix, we notify the app of `lndSyncing` immediately after the
wallet has been unlocked.
Fix#525
Tom Kirkpatrick
e06fc9458e