fix(scheduler): typo in metricSentToDLQ... methods (#28307)

This PR includes breaking changes to the `aws-scheduler-alpha` module.

## Description
This PR introduces breaking changes by correcting typos in the method names of the Schedule and Group constructs. 
Specifically, the method name `metricSentToDLQTrunacted` has been changed to `metricSentToDLQTruncated`, and `metricAllSentToDLQTrunacted` has been changed to `metricAllSentToDLQTruncated`.
https://docs.aws.amazon.com/scheduler/latest/UserGuide/monitoring-cloudwatch.html

BREAKING CHANGE: The typos in the Schedule and Group construct method names have been fixed, changing `metricSentToDLQTrunacted` to `metricSentToDLQTruncated` and `metricAllSentToDLQTrunacted` to `metricAllSentToDLQTruncated`.

----

*By submitting this pull request, I confirm that my contribution is made under the terms of the Apache-2.0 license*

Author: sakurai-ryo

packages/@aws-cdk/aws-scheduler-alpha/lib/group.ts

@@ -100,7 +100,7 @@ export interface IGroup extends IResource {
    *
    * @default - sum over 5 minutes
    */
-  metricSentToDLQTrunacted(props?: cloudwatch.MetricOptions): cloudwatch.Metric;
+  metricSentToDLQTruncated(props?: cloudwatch.MetricOptions): cloudwatch.Metric;
 
   /**
    * Grant the indicated permissions on this group to the given principal
@@ -224,7 +224,7 @@ abstract class GroupBase extends Resource implements IGroup {
    *
    * @default - sum over 5 minutes
    */
-  public metricSentToDLQTrunacted(props?: cloudwatch.MetricOptions): cloudwatch.Metric {
+  public metricSentToDLQTruncated(props?: cloudwatch.MetricOptions): cloudwatch.Metric {
     return this.metric('InvocationsSentToDeadLetterCount_Truncated_MessageSizeExceeded', props);
   }
 

packages/@aws-cdk/aws-scheduler-alpha/lib/schedule.ts

@@ -209,7 +209,7 @@ export class Schedule extends Resource implements ISchedule {
    *
    * @default - sum over 5 minutes
    */
-  public static metricAllSentToDLQTrunacted(props?: cloudwatch.MetricOptions): cloudwatch.Metric {
+  public static metricAllSentToDLQTruncated(props?: cloudwatch.MetricOptions): cloudwatch.Metric {
     return this.metricAll('InvocationsSentToDeadLetterCount_Truncated_MessageSizeExceeded', props);
   }