FREB: Freb log is not generated if the backend process (dotnet.exe) is killed when the first breakpoint to the aspnetcore!SERVER_PROCESS::PostStartCheck hit

[jhkimnew]

STEPS TO REPRO:

1. Enable ANCM FREB tracing
2. Start w3wp.exe process and attach the debugger
3. Set a break point to aspnetcore!SERVER_PROCESS::PostStartCheck
4. Send a request to aspnetcore app which uses out-of-process mode
5. When the first time of the breakpoint hit happens, kill the backend process (dotnet.exe)
6. When the second time of the breakpoint hit happens, continue without killing the backend process

EXPECTED:

FREB log file is generated.

ACTUAL:

There is no FREB log file

[muratg]

@shirhatti should we carry FREB related issues to a single issue elsewhere?

[muratg]

Removing from preview2.

@shirhatti need to close this repo soon.