Report the correct app version when sending panics to server

Previously, we were just relying on the `ZED_APP_VERSION` environment
variable without consulting `Platform::app_version`. That would always
report "dev" as the app version because `ZED_APP_VERSION` is only used
for testing.
7ecc67bcd5Antonio Scandurra committed on 6/2/2022, 11:00:21 AMparenta8cde09
1 file changedLine totals unavailable