[GR-36006] Make SubstrateCompilationMXBean#getTotalCompilationTime compatible with JDKs CompilationMXBean implementation.

substratevm/CHANGELOG.md

@@ -17,6 +17,7 @@ This changelog summarizes major changes to GraalVM Native Image.
 * (GR-70046) Remove all support for running image builder on classpath.
 * (GR-71146) Make `ParseRuntimeOptions` a non-experimental flag and extract a separate (experimental) `InitializeVM` flag. If your project previously used `ParseRuntimeOptions` and you call `VMRuntime.initialize()` manually, you might have to disable the new flag.
 * (GR-69577) Retire `--future-defaults=complete-reflection-types`. All reflective operations on types registered for reflection will now return complete results.
+* (GR-71698) Introduced a new value for `--future-defaults=run-time-initialize-resource-bundles` that shifts away from build-time initialization for 'java.util.ResourceBundle'. Unless you store 'ResourceBundle'-related classes in the image heap, this option should not affect you. In case this option breaks your build, follow the suggestions in the error messages.
 
 ## GraalVM 25
 * (GR-52276) (GR-61959) Add support for Arena.ofShared().

substratevm/src/com.oracle.svm.core/src/com/oracle/svm/core/jdk/management/SubstrateCompilationMXBean.java

@@ -63,6 +63,6 @@ public boolean isCompilationTimeMonitoringSupported() {
 
     @Override
     public long getTotalCompilationTime() {
-        return 0;
+        throw new UnsupportedOperationException("Compilation time monitoring is not supported.");
     }
 }