Implement default asset sort order

[qoqobolo]

Feature Issue

User Story

As a user, I want my assets to be sorted in a specific order so that the list is easier for me to use and perceive visually.

Description

Case 1: user does not have any tokens

In this case the order should always be:

SNT
ETH
DAI

https://www.figma.com/file/xLs1KYmF4e6WwRTZVJKeUK/Descoped-Wallet?type=design&node-id=1-46718&mode=design&t=8fvAf6JXms4qTPK2-4

Case 2: user has tokens on their balance

In this case, assets should be sorted by descending fiat balance

https://www.figma.com/file/xLs1KYmF4e6WwRTZVJKeUK/Descoped-Wallet?type=design&node-id=2251-468392&mode=design&t=8fvAf6JXms4qTPK2-4

Acceptance Criteria

• both cases are covered
• the sort order is applied both on the home and account pages
• the order changes when the token balance changes