Fixes bookmark toolbar move

[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.
• Request a security/privacy review as needed. (Ask a Brave employee to help if you cannot access this document.)

Resolves #12484

Auditors:

Test Plan: defined in #12484

Reviewer Checklist:

• Request a security/privacy review as needed if one was not already requested.

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

[codecov-io]

Codecov Report

Merging #12496 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #12496      +/-   ##
==========================================
+ Coverage   55.91%   55.91%   +<.01%     
==========================================
  Files         278      278              
  Lines       26975    26980       +5     
  Branches     4363     4363              
==========================================
+ Hits        15082    15086       +4     
- Misses      11893    11894       +1

Flag	Coverage Δ
#unittest	55.91% <100%> (ø)	⬆️

Impacted Files	Coverage Δ
app/browser/reducers/bookmarksReducer.js	96.92% <100%> (-0.7%)	⬇️
app/browser/reducers/bookmarkFoldersReducer.js	100% <100%> (ø)	⬆️

[bsclifton]

Works great- change looks good 😄 👍

[bsclifton]

master bd129e3
0.21.x fbb07aa
0.20.x 21fceb5