API changes for claim management

[amanda-ariyaratne]

Purpose

This PR brings the following changes.

• Adds a list of claim properties for the external claims. This is required to send the "isSystemClaim" property to the frontend.
• Add 403 Forbidden scenarios

Related PRs

• In-Memory Claim Management carbon-identity-framework#6007
• Remove delete option from default claims and dialects identity-apps#7069

Goals

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[jenkins-is-staging]

PR builder started
Link: https://github.com/wso2/product-is/actions/runs/11606802448

[jenkins-is-staging]

PR builder completed
Link: https://github.com/wso2/product-is/actions/runs/11606802448
Status: success

[jenkins-is-staging]

Approving the pull request based on the successful pr build https://github.com/wso2/product-is/actions/runs/11606802448

[amanda-ariyaratne]

Integration test failures will be fixed with the below PR.

• Add integration tests for in-memory claim management product-is#21601