fix: [UIE-10074, UIE-10076, UIE-10075] - IAM: Assigned Roles table pagination fixes

[abailly-akamai]

Proposed as an alternative to #13330

Description 📝

This PR fixes couple of bugs related to resetting page in Assigned Roles/Entities table when user Remove/Unassign/Change role/Assignment

Changes 🔄

List any change(s) relevant to the reviewer.

• Update usePagination hook logic for better page resetting synchronization
• Cleanup instances and manual pagination instances
• Improve hook coverage

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

Preview 📷

Before	After
UIE-10074
Screen.Recording.2026-01-28.at.10.12.03.AM.mov	Screen.Recording.2026-01-28.at.10.13.25.AM.mov
UIE-10075
Screen.Recording.2026-01-28.at.10.22.19.AM.mov	Screen.Recording.2026-01-28.at.10.23.27.AM.mov
Screen.Recording.2026-01-28.at.10.24.48.AM.mov	Screen.Recording.2026-01-28.at.10.25.44.AM.mov
UIE-10076
Screen.Recording.2026-01-28.at.10.40.11.AM.mov	Screen.Recording.2026-01-28.at.10.41.03.AM.mov

How to test 🧪

Prerequisites

(How to setup test environment)

• use iam account
• use child account + IAM Delegation flag is enabled

Reproduction steps

(How to reproduce the issue, if applicable)

UIE-10074

• Go to /iam/users/username/roles (or /iam/roles/defaults/roles) with 26 assigned roles
• Go to 2. page of the table.
• Click Remove option in the role's action menu.
• Click Cancel button in the remove confirmation popup.

UIE-10075 - 1st issue

• Go to /iam/users/username/roles (or /iam/roles/defaults/roles) with 26 assigned roles
• linode_admin role is the last one on the 1st page and linode_contributer is the 1st role on the 2nd page
• Go to 2. page of the table
• Click Change role for linode_contributer to linode_viewer

UIE-10075 - 2nd issue

• Go to /iam/users/username/roles (or /iam/roles/defaults/roles) with 26 assigned roles
• Change role for any role on the 1st page

UIE-10076

• Go to /iam/users/username/roles (or /iam/roles/defaults/roles) with 26 assigned roles
• Go to 2. page of the table with the one entity role there
• Click remove assignment form that role

Verification steps

(How to verify changes)

UIE-10074

• The table should remain on the same page

UIE-10075

• The table should remain on the same page if user changes role to a new one
• The table should reset to the prev page if user change role to the already existing one
• The table should remain on the same page if user changes role on the 1st page

UIE-10076

• The table should reset to the prev page if user removes the last assignment form the 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

[aaleksee-akamai]

I like your approach. Thanks for cleaning this up!

[linode-gh-bot]

Cloud Manager UI test results

🔺 1 failing test on test run #6 ↗︎

❌ Failing	✅ Passing	↪️ Skipped	🕐 Duration
1 Failing	864 Passing	11 Skipped	43m 27s

Details

Failing Tests
	Spec	Test
❌	search-images.spec.ts	Cloud Manager Cypress Tests→Search Images » creates two images and make sure they show up in the table and are searchable

Troubleshooting

Use this command to re-run the failing tests:

pnpm cy:run -s "cypress/e2e/core/images/search-images.spec.ts"