Improve transaction fee breakdown

[janewang]

Relevant thread: https://stellarfoundation.slack.com/archives/C06KTGUULUF/p1783022763347469

[jeesunikim]

Ask Claude: for this tx: https://stellar.expert/explorer/public/tx/4999b277e44b638aca27137244e860af93d15d9c78bdc7e0ed5302f302359f8b can you breakdown the fees by individual components based on the limits here: https://lab.stellar.org/network-limits