feat: [UIE-10182, UIE-10168] - IAM Delegations: notifications and error state

[aaleksee-akamai]

Description 📝

This PR adds an error state for default roles tables and the notification banners when change role/update entities.

Changes 🔄

List any change(s) relevant to the reviewer.

• Add an error state
• Add tests
• Add notification banners

Scope 🚢

Upon production release, changes in this PR will be visible to:

• All customers
• Some customers (e.g. in Beta or Limited Availability)
• No customers / Not applicable

How to test 🧪

Prerequisites

(How to setup test environment)

• use child account

Reproduction steps

(How to reproduce the issue, if applicable)

• go to /iam/roles/defaults/roles and to /iam/roles/defaults/entity-access

• block /iam/delegation/default-role-permissions endpoint

• go to /iam/roles/defaults/roles or /iam/users/username/roles

• change role or update entities for a role

Verification steps

(How to verify changes)

• There should be an error state if api fails
• There is a notification after completing an action for role

Author Checklists

As an Author, to speed up the review process, I considered 🤔

👀 Doing a self review
❔ Our contribution guidelines
🤏 Splitting feature into small PRs
➕ Adding a changeset
🧪 Providing/improving test coverage
🔐 Removing all sensitive information from the code and PR description
🚩 Using a feature flag to protect the release
👣 Providing comprehensive reproduction steps
📑 Providing or updating our documentation
🕛 Scheduling a pair reviewing session
📱 Providing mobile support
♿ Providing accessibility support

• I have read and considered all applicable items listed above.

As an Author, before moving this PR from Draft to Open, I confirmed ✅

• All tests and CI checks are passing
• TypeScript compilation succeeded without errors
• Code passes all linting rules

[linode-gh-bot]

Cloud Manager UI test results

🎉 866 passing tests on test run #2 ↗︎

❌ Failing	✅ Passing	↪️ Skipped	🕐 Duration
0 Failing	866 Passing	11 Skipped	37m 37s

[mpolotsk-akamai]

Tested the verification steps ✅
Works as expected.