Cross-chain Relay swaps to CELO missing transaction history and execution price

[coderabbitai]

Problem

Cross-chain Relay swaps to CELO (a second-class chain) are missing:

• Transaction history display
• Execution price data

This affects users swapping to CELO via the Relay protocol, as they cannot see their swap history or the actual execution price they received.

Context

CELO was integrated as a second-class Relay chain in the recent chain integration work. While the swap functionality itself works, the transaction history and execution price tracking for these swaps are not yet implemented.

This is a follow-up item identified during review of the Ethereal integration PR.

Expected Behavior

• Users should see Relay swap transactions to CELO in their transaction history
• Execution prices should be displayed for completed CELO swaps

Related

• PR: feat: integrate Ethereal (5064014) as second-class Relay chain #11940
• Comment: feat: integrate Ethereal (5064014) as second-class Relay chain #11940 (comment)
• Reported by: @gomesalexandre
• Similar issue for Cetus/SUI: Investigate Cetus swaps missing execution price #11486