feat: savers read-only opportunities

[gomesalexandre]

Description

Makes THORChain savers opportunity view-only and balance-only: can only see them if you have a balance, and can't interact with them through the app's modal but instead are linked to THORChain's X for keeping up-to-date with updates.

Issue (if applicable)

closes #8866

Risk

High Risk PRs Require 2 approvals

What protocols, transaction types, wallets or contract interactions might be affected by this PR?

Low, risk of borked opportunities, though should be pretty easy to test given we've removed the "By Provider" view

Testing

• If there's no THORChain savers balance, no THORChain savers opportunity should be displayed
• Savers opportunities are displayed if there's an active balance only, and manage is a read-only link to THORCHain's X

Engineering

• ^

Operations

• 🏁 My feature is behind a flag and doesn't require operations testing (yet)

• ^

Screenshots (if applicable)

https://jam.dev/c/3bda7b99-8dbe-4e2d-a3e6-dd70d9e7aa71
https://jam.dev/c/fab5c32b-fa34-4b74-af29-d76eabe8a614

[0xApotheosis]

First functional pass:

We now have an external link icon that does nothing:

Clicking "Manage" does indeed open the X link, but also opens the modal, which feels really odd.

https://jam.dev/c/47a4391d-b223-4f9e-8dc5-28a7cbc09dc4

[gomesalexandre]

Thanks for the great functional pass @0xApotheosis!

4 birds, one stone https://jam.dev/c/ec57988d-6cd1-4f78-93ea-5cf32b20e4b9 :

• Remove the useless read-only icon from left side: 98fc80a
• Rename "Manage" to "View" for read-only: 98fc80a (felt weird to call this manage but this isn't necessarily true, and definitely is not in the case of THORChain savers)
• Fix the "Manage" modal opening when it should not for read-only: 98fc80a
• Add migration to ensure all clients have the updated opportunities meta/data: e109d0a

[0xApotheosis]

One potential edge-case bug, but happy to get this in in the name of progress.