fix: lifi bridges final trade quote

[gomesalexandre]

Description

This PR ensures that we properly populate allowed bridge (as gotten from rate time as [bridge] at rate time), under the bridges allowedlist for Li.Fi, vs. us erroneously doing so under the exchanges umbrella previously.

This means that all bridges were guaranteed to fail at quote time, as bridges and exchanges are two different notions / schemas, and passing one in the other would fail validation upstream.

Issue (if applicable)

closes #8344

Risk

High Risk PRs Require 2 approvals

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

Low, small risk of regular trades broken but easily regression testable

Testing

• When attempting a Li.Fi bridge, you're not getting a blank screen at final quote time
• Well, there is one ramification to that: you may still get a blank screen at final quote time, but that's an entirely different issue and unrelated to bridges: Blank screen attempting to execute unstable tool on Li.Fi #8347
• Same-chain Li.Fi swaps are still happy

Engineering

• ^

Operations

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

• ^

Screenshots (if applicable)

• Li.Fi Bridges in develop

https://jam.dev/c/d583435a-75b8-4e7d-94a2-99858b1f233f

• Li.Fi Bridges in this diff

https://jam.dev/c/9c894f4e-ea0f-4a5d-a04f-29d70266c9a8

• Li.Fi same-chain swaps in this diff

https://jam.dev/c/f39adad4-1bdf-49eb-b5ad-74b2d9161c0a

[NeOMakinG]

Bridge (ARB to Avax) (The success tx hasn't been auto fetched, it was loading infinitely, but doesn't seem related to the TX at all)
https://jam.dev/c/d989d364-67ae-45da-88e9-0c9dd8605f79

Swap
https://jam.dev/c/c713feb5-290f-4f08-a62a-4adfac5ce115