fix: Fixing windows crash after onboarding

[alexjba]

What does the PR do

Closes: #15035

The app is crashing when the QVariant set as module context property gets collected. Not sure why it happens more often in the onboarding flow and on windows.

Next steps:

1. Integrate nim-libbacktrace to help debugging nim crashes where there is no call stack provided by nim and analyse if we can use it on release builds or only for debugging purposes. Once we release the app there will be no way to debug such crashes unless we reproduce. And even then it's very difficult to do and time consuming.

Affected areas

Wallet