fix(cloudfront): truncate long ResponseHeaderPolicy names (aws#21525)

Fixes aws#21524

----

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packages/@aws-cdk/aws-cloudfront/lib/response-headers-policy.ts

@@ -94,7 +94,9 @@ export class ResponseHeadersPolicy extends Resource implements IResponseHeadersP
       physicalName: props.responseHeadersPolicyName,
     });
 
-    const responseHeadersPolicyName = props.responseHeadersPolicyName ?? Names.uniqueId(this);
+    const responseHeadersPolicyName = props.responseHeadersPolicyName ?? Names.uniqueResourceName(this, {
+      maxLength: 128,
+    });
 
     const resource = new CfnResponseHeadersPolicy(this, 'Resource', {
       responseHeadersPolicyConfig: {

packages/@aws-cdk/aws-cloudfront/test/response-headers-policy.test.ts

@@ -143,4 +143,14 @@ describe('ResponseHeadersPolicy', () => {
       },
     });
   });
+
+  test('it truncates long auto-generated names', () => {
+    new ResponseHeadersPolicy(stack, 'AVeryLongIdThatMightSeemRidiculousButSometimesHappensInCdkPipelinesBecauseTheStageNamesConcatenatedWithTheRegionAreQuiteLongMuchLongerThanYouWouldExpect');
+
+    Template.fromStack(stack).hasResourceProperties('AWS::CloudFront::ResponseHeadersPolicy', {
+      ResponseHeadersPolicyConfig: {
+        Name: 'StackAVeryLongIdThatMightSeemRidiculousButSometimesHappensIntenatedWithTheRegionAreQuiteLongMuchLongerThanYouWouldExpect39083892',
+      },
+    });
+  });
 });