provide default value when message is not registered in titles.properties

Author: wangmingliang-ms

PluginsAndFeatures/azure-toolkit-for-intellij/src/com/microsoft/azure/toolkit/intellij/common/operation/IntellijAzureOperationTitleProvider.java

@@ -24,6 +24,7 @@
 
 import com.intellij.AbstractBundle;
 import com.microsoft.azure.toolkit.lib.common.operation.AzureOperationBundle;
+import org.jetbrains.annotations.NotNull;
 
 public class IntellijAzureOperationTitleProvider extends AbstractBundle implements AzureOperationBundle.Provider {
 
@@ -33,6 +34,11 @@ private IntellijAzureOperationTitleProvider() {
         super(AzureOperationBundle.TITLES);
     }
 
+    @Override
+    public @NotNull String getMessage(@NotNull final String key, final Object @NotNull ... params) {
+        return super.messageOrDefault(key, String.format("!%s!", key), params);
+    }
+
     public static void register() {
         AzureOperationBundle.register(INSTANCE);
     }