Add ability for user to edit asset settings from asset view

[HEagle18]

Description

After adding a custom asset, user doesn't have the ability to edit asset settings after.

Steps to Reproduce

1. add a new asset to solana chain, like Bonfida
2. then try edit details from asset view

Actual result:

Expected result:

Reproduces how often:

always

Brave version (brave://version info)

all versions

Version/Channel Information:

• Can you reproduce this issue with the current release?
• Can you reproduce this issue with the beta channel?
• Can you reproduce this issue with the nightly channel?

Other Additional Information:

• Does the issue resolve itself when disabling Brave Shields? N
• Does the issue resolve itself when disabling Brave Rewards? N
• Is the issue reproducible on the latest version of Chrome?

Miscellaneous Information:

https://community.brave.com/t/wallet-asset-token-management-ordering-view/399725 issue originated from this ticket

[muliswilliam]

@kleantzogu Please provide some design mock ups. They will be very similar to editing NFTs

[josheleonard]

We have this feature for fungible assets, just need to add the same for NFTs in the details screen