feat(rds): DatabaseCluster support replicationSourceIdentifier

[phuhung273]

Issue # (if applicable)

Closes #33280

Description of changes

• DatabaseCluster support replicationSourceIdentifier
• Validate replicationSourceIdentifier cannot be used with credentials

Checklist

• My code adheres to the CONTRIBUTING GUIDE and DESIGN GUIDELINES

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

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 81.00%. Comparing base (085c2e3) to head (7844b4f).

Additional details and impacted files

@@           Coverage Diff           @@
##             main   #33471   +/-   ##
=======================================
  Coverage   81.00%   81.00%           
=======================================
  Files         238      238           
  Lines       14271    14271           
  Branches     2492     2492           
=======================================
  Hits        11560    11560           
  Misses       2425     2425           
  Partials      286      286           

Flag	Coverage Δ
suite.unit	81.00% <ø> (ø)

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Components	Coverage Δ
packages/aws-cdk	79.92% <ø> (ø)
packages/aws-cdk-lib/core	82.16% <ø> (ø)

[aws-cdk-automation]

AWS CodeBuild CI Report

• CodeBuild project: AutoBuildv2Project1C6BFA3F-wQm2hXv2jqQv
• Commit ID: 7844b4f
• Result: SUCCEEDED
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