Fix onboarding screen flashing on screen while extension initializes

[mymindstorm]

Noticable with encrypted accounts.

[codecov]

Codecov Report

Merging #753 (f81b1fb) into dev (e04af9f) will decrease coverage by 0.03%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##              dev     #753      +/-   ##
==========================================
- Coverage   18.37%   18.34%   -0.04%     
==========================================
  Files          17       17              
  Lines        1540     1543       +3     
  Branches      337      337              
==========================================
  Hits          283      283              
- Misses       1223     1226       +3     
  Partials       34       34              

Impacted Files	Coverage Δ
src/popup.ts	5.75% <0.00%> (-0.05%)	⬇️
src/store/Accounts.ts	9.82% <0.00%> (-0.07%)	⬇️

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