- Ensured the data is fully written and read to/form the pipe between the Editor and CrashReporter.
- Refactored the code sending MTFB to send it as soon as possible
- Added some special exit code to detect when the Editor is still running or the exit code is unknown when the summary event is sent.
#rb Sebastian.Nordgren, Johan.Berg
#jira UE-90733 - Editor summary event may not be sent as expected because CrashReportClient may not consume the pipe data
[CL 12216180 by Patrick Laflamme in 4.25 branch]