Disable System.ComponentModel.Composition on Mono (#46699)

Active issue is https://github.com/mono/mono/issues/16417

There seems to be some kind of System.Reflection.Emit concurrency problem here

diff --git a/src/libraries/System.ComponentModel.Composition/tests/AssemblyInfo.cs b/src/libraries/System.ComponentModel.Composition/tests/AssemblyInfo.cs
index 7ad5f68..b0523cb 100644 (file)
--- a/src/libraries/System.ComponentModel.Composition/tests/AssemblyInfo.cs
+++ b/src/libraries/System.ComponentModel.Composition/tests/AssemblyInfo.cs
@@ -3,3 +3,4 @@
 
 using Xunit;
 
+[assembly: ActiveIssue("https://github.com/mono/mono/issues/16417", TestRuntimes.Mono)] // flaky tests