upcoming: [M3-7727] - Only support Edge to Edge Migrations

[hana-linode]

Description 📝

We want to cultivate that edge instances are different from core instances. So, migrating a Linode instance from core to edge or from edge to core should not be possible. Only edge-to-edge migrations and core-to-core migrations should be possible.

Changes 🔄

List any change relevant to the reviewer.

• Hide core regions if the current Linode is in an edge region
• Hide edge regions if the current Linode is in a core region

Preview 📷

How to test 🧪

Verification steps

(How to verify changes)

• Turn on the MSW
• Open the Migrate Linode dialog via the Linodes landing table dropdown action or Linode details header dropdown action
• Observe the current region is an edge region and the New region input only contains edge regions
• Change line 770 in serverHandlers.ts to a core region like us-east
• Hard refresh the page and open the Migrate Linode dialog again
• Observe the current region is a core region and the New region input only contains core regions

As an Author I have considered 🤔

Check all that apply

• 👀 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

[github-actions]

Coverage Report: ❌
Base Coverage: 81.32%
Current Coverage: 81.28%

[abailly-akamai]

Nice! thanks for the change 🧹

Code looks good and filtering is working as expected ✅