fix: no more thor tx status spam

Description

Currently, we are polling thorchain for tx status on any tx detected over websocket on savers supported chains. To reduce this spam, we can now check the tx metadata and only poll on savers transactions. This is reliable for all savers transactions made through the app. If there is no memo on an external savers transactions (via walletconnect), we would miss the update.

Pull Request Type

[x] :bug: Bug fix (Non-breaking Change: Fixes an issue)
[ ] :hammer_and_wrench: Chore (Non-breaking Change: Doc updates, pkg upgrades, typos, etc..)
[ ] :nail_care: New Feature (Breaking/Non-breaking Change)

Issue (if applicable)

N/A

Risk

High Risk PRs Require 2 approvals

Low - worst case a refresh is needed for savers opportunity update

What protocols, transaction types or contract interactions might be affected by this PR?

Testing

Perform a savers deposit and validate opportunity updates on confirmation
Perform a savers withdraw and validate opportunity updates on confirmation

Engineering

:point_up:

Operations