GetProcessInfo command no process arguments on non-Windows while suspended

[jander-msft]

If a .NET 5+ runtime is suspended and a GetProcessInfo command is issued over the diagnostic pipe, then the CommandLine only contains the process name on Unix operating systems, e.g.:

/__w/1/s/.dotnet/dotnet

If the GetProcessInfo command is issued immediately after resuming the runtime, the same data is reported (only the process name).

If the GetProcessInfo command is issued sometime AFTER the runtime is resumed, then it returns the property command line, e.g.:

/__w/1/s/.dotnet/dotnet /__w/1/s/artifacts/bin/Microsoft.Diagnostics.Monitoring.UnitTestApp/Release/net5.0/Microsoft.Diagnostics.Monitoring.UnitTestApp.dll AsyncWait

[jander-msft]

Corresponding runtime issue: dotnet/runtime#59439