Update network fees at trade confirmation screens as needed separate from quotes

[0xean]

• confirmation screen should still allow for network fees to be periodically refreshed

[gomesalexandre]

Reopening as wrong issue closed

[gomesalexandre]

as a follow up to this ticket we should either then add updates to the quote or if we cannot accomplish this then update the network fees at the least.

@0xean FYI this issue is actually decoupled from 0x permit2 work

#8313 went in yesterday which closes #8271

• in its current state, Lifi gas estimates are incorrect at quote time  #8271 was effectively a subset of this issue, so to make it an actual Li.FI-y issue/PR and not mix issues, 8313 closed it by effectively fixing Li.Fi network fees when we can (tokens with approval/native assets).
• We also have feat: handle not/enough fee asset balance for network fees at final trade quote time #8305 which should be going in soon and makes things better here as well, and will make them even better when we do final refetch at quote time

It did not do any kind of network fees refetch however, since that's the goal of this (8270)

Keeping this one in backlog since it has needs grooming tag, however, do expect one tackles #8270 PR for this issue for the specific case of Li.Fi in the meantime.

Update: here it is! #8326