[Bug][BuildCheck]: Build succeedes with MSBUILDNOINPROCNODE enabled

[f-alizada]

Issue Description

While building with buildcheck enabled and MSBUILDNOINPROCNODE=1
Severity of the rule set to Error, does not reported to the all build:

Steps to Reproduce

Set the default Severity SharedOutputPathAnalyzer to error.
Repro projects could be found here:

msbuild/src/BuildCheck.UnitTests/EndToEndTests.cs

Line 36 in d542f3a

public void SampleAnalyzerIntegrationTest(bool buildInOutOfProcessNode, bool analysisRequested)

Expected Behavior

Build to fail if the severity set to Error

Actual Behavior

Errors are logged,
But the build is green.