MINOR: fix rawtype warning in StandbyTask (#17203)

Reviewers: Chia-Ping Tsai <chia7712@gmail.com>

streams/src/main/java/org/apache/kafka/streams/processor/internals/StandbyTask.java

@@ -49,8 +49,7 @@ public class StandbyTask extends AbstractTask implements Task {
     private final Sensor updateSensor;
     private final StreamsMetricsImpl streamsMetrics;
 
-    @SuppressWarnings("rawtypes")
+    protected final InternalProcessorContext<?, ?> processorContext;
-    protected final InternalProcessorContext processorContext;
 
     /**
      * @param id              the ID of this task
@@ -61,7 +60,6 @@ public class StandbyTask extends AbstractTask implements Task {
      * @param stateMgr        the {@link ProcessorStateManager} for this task
      * @param stateDirectory  the {@link StateDirectory} created by the thread
      */
-    @SuppressWarnings("rawtypes")
     StandbyTask(final TaskId id,
                 final Set<TopicPartition> inputPartitions,
                 final ProcessorTopology topology,
@@ -70,7 +68,7 @@ public class StandbyTask extends AbstractTask implements Task {
                 final ProcessorStateManager stateMgr,
                 final StateDirectory stateDirectory,
                 final ThreadCache cache,
-                final InternalProcessorContext processorContext) {
+                final InternalProcessorContext<?, ?> processorContext) {
         super(
             id,
             topology,
@@ -333,11 +331,6 @@ public class StandbyTask extends AbstractTask implements Task {
         throw new IllegalStateException("Attempted to add records to task " + id() + " for invalid input partition " + partition);
     }
 
-    @SuppressWarnings("rawtypes")
-    InternalProcessorContext processorContext() {
-        return processorContext;
-    }
-
     /**
      * Produces a string representation containing useful information about a Task.
      * This is useful in debugging scenarios.

streams/src/main/java/org/apache/kafka/streams/processor/internals/StandbyTaskCreator.java

@@ -92,7 +92,7 @@ class StandbyTaskCreator {
                     partitions,
                     stateUpdaterEnabled);
 
-                final InternalProcessorContext<Object, Object> context = new ProcessorContextImpl(
+                final InternalProcessorContext<?, ?> context = new ProcessorContextImpl(
                     taskId,
                     applicationConfig,
                     stateManager,
@@ -147,7 +147,7 @@ class StandbyTaskCreator {
                                   final Set<TopicPartition> inputPartitions,
                                   final ProcessorTopology topology,
                                   final ProcessorStateManager stateManager,
-                                  final InternalProcessorContext<Object, Object> context) {
+                                  final InternalProcessorContext<?, ?> context) {
         final StandbyTask task = new StandbyTask(
             taskId,
             inputPartitions,

streams/src/test/java/org/apache/kafka/streams/processor/internals/StandbyTaskTest.java

@@ -598,7 +598,7 @@ public class StandbyTaskTest {
             streamsMetrics
         );
 
-        final InternalProcessorContext context = new ProcessorContextImpl(
+        final InternalProcessorContext<?, ?> context = new ProcessorContextImpl(
             taskId,
             config,
             stateManager,