feat: [UIE-9079] - IAM RBAC: fix perm check for nodebalancer

[aaleksee-akamai]

Description 📝

This PR fixes the IAM permission check for nodebalancer.

Changes 🔄

List any change(s) relevant to the reviewer.

• Update the permission check depending on the device type

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

Target release date 🗓️

August 26

Preview 📷

Before	After

How to test 🧪

Prerequisites

(How to setup test environment)

• MSW or iam (restricted) + regular account to compare
  Permissions to check:
  Custom User Entity Permissions preset:

[
    'delete_firewall_device',
    'update_linode',
]

Verification steps

(How to verify changes)

• Confirm the buttons/inputs are disabled according the grant model with IAM is off, and according to the RBAC model when IAM is on.

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

[kwojtowiakamai]

✅ The "Remove" button in RemoveDeviceDialog is correctly enabled for both IAM and non-IAM users.

The button is not disabled if the user doesn’t have permissions for a nodebalancer, but since nodebalancers aren’t migrated to RBAC yet this is fine for now. (as we discussed in Webex)

[linode-gh-bot]

Cloud Manager UI test results

🎉 724 passing tests on test run #2 ↗︎

❌ Failing	✅ Passing	↪️ Skipped	🕐 Duration
0 Failing	724 Passing	4 Skipped	115m 0s

[dwiley-akamai]

nit: should this be considered a bug fix? If not, maybe we should say "adjust" instead of "fix" in the description