test: Document race:validation_chainstatemanager_tests suppression

Author: MarcoFalke

test/sanitizer_suppressions/tsan

@@ -28,7 +28,6 @@ race:BerkeleyBatch
 race:BerkeleyDatabase
 race:DatabaseBatch
 race:leveldb::DBImpl::DeleteObsoleteFiles
-race:validation_chainstatemanager_tests
 race:zmq::*
 race:bitcoin-qt
 
@@ -42,6 +41,10 @@ deadlock:TestPotentialDeadLockDetected
 race:src/qt/test/*
 deadlock:src/qt/test/*
 
+# Race in src/test/main.cpp
+# Can be removed once upgraded to boost test 1.74 in depends
+race:validation_chainstatemanager_tests
+
 # External libraries
 deadlock:libdb
 race:libzmq