Fixes use case where passphrase is empty

[NejcZdovc]

Submitter Checklist:

• Submitted a ticket for my issue if one did not already exist.
• Used Github auto-closing keywords in the commit message.
• Added/updated tests for this change (for new code or code which already has tests).
• Ran git rebase -i to squash commits (if needed).
• Tagged reviewers and labelled the pull request as needed.

Partly fixes #11383

Auditors:

Test Plan: covered with automated tests

Reviewer Checklist:

Tests

• Adequate test coverage exists to prevent regressions
• Tests should be independent and work correctly when run individually or as a suite ref
• New files have MPL2 license header

[NejcZdovc]

@bsclifton can you please help me out with this spy that I commented out. Thank you

[codecov-io]

Codecov Report

Merging #12286 into master will increase coverage by 0.59%.
The diff coverage is 87.5%.

@@            Coverage Diff             @@
##           master   #12286      +/-   ##
==========================================
+ Coverage   55.28%   55.88%   +0.59%     
==========================================
  Files         276      277       +1     
  Lines       26744    27632     +888     
  Branches     4311     4741     +430     
==========================================
+ Hits        14786    15442     +656     
- Misses      11958    12190     +232

Flag	Coverage Δ
#unittest	55.88% <87.5%> (+0.59%)	⬆️

Impacted Files	Coverage Δ
app/browser/api/ledger.js	52.07% <87.5%> (+1.47%)	⬆️
app/renderer/components/common/switchControl.js	82.66% <0%> (-2.7%)	⬇️
js/about/preferences.js	44.72% <0%> (-0.4%)	⬇️
app/common/constants/settingsEnums.js	100% <0%> (ø)	⬆️
js/constants/windowConstants.js	100% <0%> (ø)	⬆️
app/renderer/components/styles/global.js	100% <0%> (ø)	⬆️
app/browser/activeTabHistory.js	90.32% <0%> (ø)
js/actions/windowActions.js	5.02% <0%> (+0.16%)	⬆️
app/renderer/components/common/messageBox.js	88.34% <0%> (+0.59%)	⬆️
... and 14 more

[NejcZdovc]

thx @bsclifton tests are now fixed, ready for the review

[bsclifton]

Great fix 😄 👍

[bsclifton]

master 8745727
0.21.x 415747f
0.20.x 39bed6c

[bsclifton]

merged to 0.19.x with 395e12b