Fixes#5359
The comments explain what's going on. Longer term we should adjust our
termio/exec to avoid the SIGPIPE but its still possible (i.e. that
thread crashes) to happen so we should be robust to it.
Fixes#3202
Two changes to get here:
1. Do not fail startup if crash reporting initialization fails. This is a
non-critical feature and should not prevent the terminal from starting.
2. Avoid freeing Sentry transport on error path. This segfaults.
Upstream issue will be reported separately.
