sync notification settings to wallet when enabling/disabling

[tzarebczan]

See details in https://github.com/lbryio/lbry-desktop/issues/4762

Need to coordinate with App team for the wallet data portion.

[akinwale]

The first bit is done. Need to implement the wallet sync part.

[tzarebczan]

This coupled with https://github.com/lbryio/lbry-android/issues/1137 makes the data get out of sync initially.

Also gets out of sync anyone someone unsubs.

[tzarebczan]

Please reference the app code which moves this into a new key on initial load, and then stores as:

       "following": [
          {
            "notificationsDisabled": true,
            "uri": "lbry://@ProjectVeritas#77d755bdea99da055391e90a0adc6b5bbeefa0bd"
          },
          {
            "notificationsDisabled": true,
            "uri": "lbry://@iamlucid#e74c3159aaace29a29c7ccd722b2d8ecd6815a83"
          },
          {