(cloudfront): (Replace intanceof Role with Role.isRole method)

[bun913]

Describe the feature

I create Role.isRole() method at #24340 (#24340 (comment))

But below points use instanceof iam.Role.

aws-cdk/packages/@aws-cdk/aws-cloudfront/lib/web-distribution.ts

Line 1056 in 3d7505b

if (a.lambdaFunction.role && a.lambdaFunction.role instanceof iam.Role && a.lambdaFunction.role.assumeRolePolicy) {

aws-cdk/packages/@aws-cdk/aws-cloudfront/lib/private/cache-behavior.ts

Line 78 in 3d7505b

if (role && role instanceof iam.Role && role.assumeRolePolicy) {

aws-cdk/packages/@aws-cdk/aws-cloudfront/lib/experimental/edge-function.ts

Line 253 in 3d7505b

if (role instanceof iam.Role && role.assumeRolePolicy) {

aws-cdk/packages/@aws-cdk/aws-codepipeline/lib/pipeline.ts

Line 767 in 3d7505b

if (action.actionProperties.role instanceof iam.Role) {

Use Case

Since instanceOf is not a product to be used for strict type determination, it is better to replace it.

fyi: https://github.com/aws/aws-cdk/pull/20564/files#diff-fe41afc44afd9acb16980754990f93acb596ed37662296575ea2fbe1c5531b50R203-R206

Proposed Solution

No response

Other Information

No response

Acknowledgements

• I may be able to implement this feature request
• This feature might incur a breaking change

CDK version used

2.67.0

Environment details (OS name and version, etc.)

macOS Big Sur

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