feat: Improve understanding of "Payer Account" by adding "Sender Account" field

[bguiz]

Problem

• UI is confusing because it displays "Payer Account" on a transaction page, but does not display the account that signed the transaction
• Note that the signer account is displayed linked within the page, but in non-obvious placed
  • Under "Transfers > Fee transfers", the account that sends to "Hedera fee collection account"
  • Under "Call Trace", the "from" field
• This isn't intuitive for users who have used block explorers of other EVM-compatible chains (e.g. the Etherscan family)

Solution

When "Transaction type" is "Ethereum Transaction":

• Add a "Sender Account" that shows the address of the account that signed the transaction, as a new field
• This field should be adjacent to the current "Payer Account" field, as that is the most likely one to be confused with sender account
• This field should be displayed as:
  • Hedera Account ID (S.R.N format), plus
  • EVM Address Alias (0x... format that isn't "long-zero")

Alternatives

• Using JSON-RPC to query the same information
• Using the links from the non-obvious parts of the transactions page
• While functional, however, both of these approaches are poor UX

Refs

• Related: Improve understanding of "Nonce" and "Ethereum Nonce" fields #626

[bguiz]

This is great, the "from", "to", and "ethereum nonce" fields are much clearer now, thanks!