fix: [UIE-10253], [UIE-10255], [UIE-10328], [UIE-10360] - IAM Delegate Switch Account company name fix

[mpolotsk-akamai]

Description 📝

This PR updates the UI behavior for delegate users without the required account permissions and improves error handling in the Switch Account drawer.

Changes 🔄

List any change(s) relevant to the reviewer.

• hide account name in the top menu
• remove "Current account" from the User Menu Popover
• update the toast message to display “Account switched.” instead of undefined
• update capitalization for the “Switch back to your account” button
• improve error handling in Switch Account Drawer
• update redirect flow when switching between parent and child accounts

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
Screen.Recording.2026-02-25.at.7.54.31.PM.mov	Screen.Recording.2026-02-25.at.7.52.58.PM.mov

How to test 🧪

Prerequisites

(How to setup test environment)

• use Parent Account
• Ensure you have:
  1. A delegate user without account_viewer and account_admin roles.
  2. A Parent user without delegations (for error testing).

Reproduction steps

(How to reproduce the issue, if applicable)
Delegate user without permissions

• Log in as a Parent user.
• Open the User Menu.
• Click “Switch Account.”
• Select a delegate user without account_viewer or account_admin roles.

API error handling

• Log in as a Parent user with no delegations.
• Block the API request for loading child accounts (e.g., via DevTools).
• Open the User Menu.
• Click “Switch Account.”

Verification steps

(How to verify changes)

Delegate UI updates

• After switching accounts, verify the toast displays “Account switched.” (not undefined).
• Verify the account name is not displayed in the top navigation.
• Verify “Current account” is not shown in the User Menu popover.

Error handling

• Confirm that when the request fails, only the API error is displayed and the delegation/access error is not shown.

Redirect flow

• Verify that switching between parent and child accounts always redirects to the Linode landing page.

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

🔺 6 failing tests on test run #2 ↗︎

❌ Failing	✅ Passing	↪️ Skipped	🕐 Duration
6 Failing	863 Passing	11 Skipped	45m 43s

Details

Failing Tests
	Spec	Test
❌	alerting-notification-channel-permission-tests.spec.ts	Cloud Manager Cypress Tests→Notification Channel Listing Page — Access Control » allows access when notificationChannels is enabled
❌	alerting-notification-channel-permission-tests.spec.ts	Cloud Manager Cypress Tests→Notification Channel Listing Page — Access Control » hides the Notification Channels tab when notificationChannels is disabled
❌	smoke-linode-landing-table.spec.ts	Cloud Manager Cypress Tests→linode landing checks » checks the landing page side menu items
❌	smoke-linode-landing-table.spec.ts	Cloud Manager Cypress Tests→linode landing checks » checks the create menu dropdown items
❌	account-switching.spec.ts	Cloud Manager Cypress Tests→Parent/Child account switching→From Parent to Child » can search child accounts
❌	account-switching.spec.ts	Cloud Manager Cypress Tests→Parent/Child account switching→From Child to Child » can switch to another Child account as a Proxy user

Troubleshooting

Use this command to re-run the failing tests:

pnpm cy:run -s "cypress/e2e/core/cloudpulse/alerting-notification-channel-permission-tests.spec.ts,cypress/e2e/core/linodes/smoke-linode-landing-table.spec.ts,cypress/e2e/core/parentChild/account-switching.spec.ts"

[abailly-akamai]

@mpolotsk-akamai could we try to address the failing account-switching.spec.ts tests?

[mpolotsk-akamai]

@jdamore-linode, quick question: for the failing E2E tests, I turned off the IAM delegation flag in the test. Does that look okay, or should we fix this another way?

[abailly-akamai]

@mpolotsk-akamai it appears the tests are still failing either way? @jdamore-linode would you mind checking? thx!