Disable Crossgen2 Json CG2 composite job (#2177)

The CG2 composite profile for the Json crossgen2 scenario consistently hits ILCompiler.CodeGenerationFailedException (IndexOutOfRangeException in CorInfoImpl.HandleToModuleToken) during publish, and on Windows runs has caused crank to hang, blocking the rest of the jobs in benchmarks-ci-01 and benchmarks-ci-02. Disable it via its condition until the underlying crossgen2 issue is resolved.

Co-authored-by: Copilot <223556219+Copilot@users.noreply.github.com>

Author: LoopedBard3

build/crossgen2-scenarios.yml

@@ -33,9 +33,12 @@ parameters:
   - displayName: Default
     arguments: --property profile=default
     condition: 'true'
+  # Disabled: consistently fails with ILCompiler.CodeGenerationFailedException (IndexOutOfRangeException
+  # in CorInfoImpl.HandleToModuleToken) during the crossgen2 composite publish, and on Windows runs has
+  # caused crank to hang, blocking the rest of the jobs in the pipeline.
   - displayName: CG2 composite # since 6.0-preview4 CG2 is the default when PublishReadyToRun=true is set 
     arguments: --property profile=composite --application.buildArguments \"/p:PublishReadyToRun=true /p:PublishReadyToRunComposite=true /p:PublishReadyToRunUseCrossgen2=true \"
-    condition: 'true'
+    condition: 'false'
   - displayName: CG2 non-composite  # /p:PublishReadyToRunComposite=false is the default
     arguments: --property profile=non-composite --application.buildArguments \"/p:PublishReadyToRun=true /p:PublishReadyToRunUseCrossgen2=true /p:PublishReadyToRunComposite=false\"
     condition: 'true'