fix: new swapper flow cow buy Tx links

[gomesalexandre]

Description

Does what it says on the box - buy Tx hashes were producing a Tx link which was not matching prod i.e /orders/ vs /tx/.
Fixed by ensuring we use the right txId / tradeId property depending on whether or not the current Tx is a buy Tx hash.

Issue (if applicable)

closes #8478

Risk

High Risk PRs Require 2 approvals

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

Low - CoW is the only one leveraging isOrder property and having different Tx links programmatic on txId / tradeId.

Testing

• Proceed with a CoW swap e2e
• Ensure both Tx links are valid

Engineering

• ^

Operations

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

• ^

Screenshots (if applicable)

• develop

https://explorer.cow.fi/orders/0x58e82e87cab4e04826bb621b5c3d14bfa7e0ec29935ce6d96b2ac5b0fef2dd34?tab=orders

• this diff

https://explorer.cow.fi/tx/0x58e82e87cab4e04826bb621b5c3d14bfa7e0ec29935ce6d96b2ac5b0fef2dd34 https://explorer.cow.fi/orders/0xfbd2fcba60cff21070362b6258d64a1917f9fbacf6cc8740976f7d1a1d9b52875daf465a9ccf64deb146eeae9e7bd40d6761c986677d9016?tab=overview

[0xApotheosis]

Splendid!

https://explorer.cow.fi/arb1/tx/0x136cd58d04afef09da8a5ccc569797e8a21a45b32823cc8ee1e7deaf21ccfa13?tab=orders
https://explorer.cow.fi/arb1/orders/0xdafc1a5a36ea555b338470790629ea18e10af252b55a17eb9308cea2b59bb94b32dbc9cf9e8fbcebe1e0a2ecf05ed86ca3096cb6677daa72?tab=overview