Sometimes onDiscoverAssetsCompleted isn't being called

[Pavneet-Sing]

Description

Steps to reproduce

1. Login wallet or reopen wallet multiple times. Sometime the progress dialog (next to "Assets" title) never disappear.

Actual result

Sometime Asset discovery dialog never disappear because onDiscoverAssetsCompleted is never called.

asset-discovery.webm

Expected result

Asset discovery dialog should always disappear.

Issue reproduces how often

Moderately

Version/Channel Information:

• Can you reproduce this issue with the current Play Store version?
• Can you reproduce this issue with the current Play Store Beta version?
• Can you reproduce this issue with the current Play Store Nightly version? Y