re-add test exclusion for dotnet/coreclr#23545 (dotnet/coreclr#23598)

Commit migrated from https://github.com/dotnet/coreclr/commit/cc23e89ca1e28be6129d3aa30c5672aceba587e1

src/coreclr/tests/issues.targets

@@ -74,6 +74,9 @@
         <ExcludeList Include="$(XunitTestBinBase)/tracing/keyword/TwoKeywords/TwoKeywords/*">
             <Issue>23224, often fails with timeout in release</Issue>
         </ExcludeList>
+        <ExcludeList Include="$(XunitTestBinBase)/JIT/Methodical/flowgraph/dev10_bug679955/volatileLocal1/*">
+            <Issue>23545</Issue>
+        </ExcludeList>
     </ItemGroup>
 
     <!-- All Unix targets -->