[GR-69696] Fix OptimizedLocalizationMode wrt CalendarProvider

PullRequest: graal/22151

Author: zapster

substratevm/mx.substratevm/suite.py

@@ -733,6 +733,7 @@
                     "sun.nio.ch",
                     "sun.util.cldr",
                     "sun.util.locale",
+                    "sun.util.spi",
                     "sun.invoke.util",
                 ],
                 "java.management": [

substratevm/src/com.oracle.svm.hosted/src/com/oracle/svm/hosted/jdk/localization/LocalizationFeature.java

@@ -103,6 +103,7 @@
 import sun.util.locale.provider.LocaleProviderAdapter;
 import sun.util.locale.provider.ResourceBundleBasedAdapter;
 import sun.util.resources.LocaleData;
+import sun.util.spi.CalendarProvider;
 
 /**
  * LocalizationFeature is the core class of SVM localization support. It contains all the options
@@ -430,7 +431,8 @@ public static void addCharset(Charset charset) {
                     TimeZoneNameProvider.class,
                     JavaTimeDateTimePatternProvider.class,
                     CalendarDataProvider.class,
-                    CalendarNameProvider.class);
+                    CalendarNameProvider.class,
+                    CalendarProvider.class);
 
     @Platforms(Platform.HOSTED_ONLY.class)
     private void addProviders() {