Properly implement getTransaction() in tron unchained-client api.ts

[coderabbitai]

Context

Currently, getTransaction() in the TRON unchained-client api.ts is not properly implemented, which prevents reusability of getTronTransactionStatus in swapper implementations. The Sun.io swapper integration currently works around this by using direct Trongrid fetch calls.

Tasks

• Properly implement getTransaction() method in tron unchained-client api.ts
• Ensure the implementation supports transaction status checking for TRON swaps
• Retest same-chain TRON swaps (Sun.io swapper) after implementation
• Confirm TRC-20 balance updates correctly after swaps

References

• PR: feat: sun.io swapper #11261
• Comment: feat: sun.io swapper #11261 (comment)
• Requested by: @gomesalexandre