change: [UIE-9908] - Update Generational Plans default sort to show newest (G8) -> oldest (G6)

[pmakode-akamai]

Description 📝

Update the default sort of the plans when "All" is selected so that the plans descend from newest (G8) to oldest (G6)

Changes 🔄

• Added client-side sorting for generational plans when "All" is selected to show plans from newest (G8) to oldest (G6)
• Added a small getGenerationRank helper to support the ordering
• Added unit tests for the helper

Scope 🚢

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

Target release date 🗓️

N/A

Preview 📷

Before	After

How to test 🧪

Verification steps

• Go to Create Linode -> Select a region -> Verify that the plan ordering works as expected
• Go to Kubernetes / Create Cluster -> Select a region -> Verify that the plan ordering works as expected

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

🔺 10 failing tests on test run #2 ↗︎

❌ Failing	✅ Passing	↪️ Skipped	🕐 Duration
10 Failing	860 Passing	11 Skipped	69m 33s

Details

Failing Tests
	Spec	Test
❌	alerts-create.spec.ts	Cloud Manager Cypress Tests→Create flow when beta alerts enabled by region and feature flag » create flow defaults to legacy alerts
❌	alerts-create.spec.ts	Cloud Manager Cypress Tests→Create flow when beta alerts enabled by region and feature flag » create flow after switching to beta alerts
❌	alerts-create.spec.ts	Cloud Manager Cypress Tests→Create flow when beta alerts enabled by region and feature flag » alerts not present for region where alerts disabled
❌	create-stackscripts.spec.ts	Cloud Manager Cypress Tests→Create stackscripts » creates a StackScript and deploys a Linode with it
❌	create-stackscripts.spec.ts	Cloud Manager Cypress Tests→Create stackscripts » creates a StackScript with Any/All target image
❌	timerange-verification.spec.ts	Cloud Manager Cypress Tests→Integration tests for verifying Cloudpulse custom and preset configurations » should implement and validate custom date/time picker for a specific date and time range
❌	smoke-community-stackscripts.spec.ts	Cloud Manager Cypress Tests→Community Stackscripts integration tests » deploys a new linode as expected
❌	lke-update.spec.ts	Cloud Manager Cypress Tests→LKE cluster updates→APL disabled » can add and delete node pools
❌	one-click-apps.spec.ts	Cloud Manager Cypress Tests→OneClick Apps (OCA) » Deploys a Linode from a One Click App with user defined fields
❌	create-linode.spec.ts	Cloud Manager Cypress Tests→Create Linode→End-to-end→By plan type » creates a Dedicated CPU Linode

Troubleshooting

Use this command to re-run the failing tests:

pnpm cy:run -s "cypress/e2e/core/linodes/alerts-create.spec.ts,cypress/e2e/core/stackscripts/create-stackscripts.spec.ts,cypress/e2e/core/cloudpulse/timerange-verification.spec.ts,cypress/e2e/core/stackscripts/smoke-community-stackscripts.spec.ts,cypress/e2e/core/kubernetes/lke-update.spec.ts,cypress/e2e/core/oneClickApps/one-click-apps.spec.ts,cypress/e2e/core/linodes/create-linode.spec.ts"