fix(store): Fix "Missing state eta" error on Infinity/NaN (#1850)
fix(store): Fix "Missing state eta" error on Infinity/NaN (#1850)

If the speed is zero, the eta becomes Infinity, which isn't transmitted
properly over IPC for at this time unknown reasons.
To prevent the "Missing state eta" error from popping up when the speed is
zero, we set the eta to zero as well in those cases.

Change-Type: Patch
resin-io/resin-etcher,resin-io/etcher,resin-io/etcher,resin-io/etcher,resin-io/herostratus,resin-io/etcher,resin-io/etcher,resin-io/resin-etcher,resin-io/herostratus