feat: re-enable PUBLIC_TRADE_ROUTE flag

[gomesalexandre]

Description

Actually keeping the flag as off in prodish envs for now so swapper boots back to splash page without a wallet connected, 3 visual issues have been found out by ops in https://discord.com/channels/554694662431178782/1308774923317022752/1308934924341870628, to be specced out.

The focus of the quotes vs. rates PR was on, well, quotes vs. rates, and not enough love has been given to the actual no wallet connected flow just yet so this will be for a follow-up PR!

Issue (if applicable)

N/A

Risk

High Risk PRs Require 2 approvals

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

Low - there is only one consumption of this flag and that is for booting back to the splash page in trade route.

Testing

Engineering

• Run yarn env app
• Ensure you get booted back to splash screen without a wallet connected in trade route

Operations

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

• Ensure you get booted back to splash screen without a wallet connected in trade route

Screenshots (if applicable)

https://jam.dev/c/5fee9b56-5437-444d-9c14-9dd4ebb05511