[TASK] Fetch and display all non-zero token balances on the account page

[drewstone]

Overview

Tangle

We have liquid staking integrated now, if we're testing that, test that you can see your LST balance in the account page. This leads us towards check balances of all assets owned in the native system.

Similarly, TNT accounts can hold ERC20 assets. You may want to track the balances (as described below) at the mapped EVM address for the native TNT account.

EVM

For each EVM token in the config package, specifying ERC20 token addresses on Tangle EVM, we simply want to query the balance of the active account and display the balance in the account page.

Now that we are fetching balances in the account page, these balances should also be cached/stored so that when a user goes to restake assets on Tangle, that the list of tokens is sorted first by those that they have balances of.