Revert "Revert "Remove old copy hack for macOS packaged builds""

[darkdh]

This reverts commit 43e5541.

fix #10214

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.

Test Plan:

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

[codecov-io]

Codecov Report

Merging #10419 into master will increase coverage by 0.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #10419      +/-   ##
==========================================
+ Coverage    53.8%   53.81%   +0.01%     
==========================================
  Files         238      238              
  Lines       21056    21051       -5     
  Branches     3259     3258       -1     
==========================================
  Hits        11329    11329              
+ Misses       9727     9722       -5

Flag	Coverage Δ
#unittest	53.81% <100%> (+0.01%)	⬆️

Impacted Files	Coverage Δ
js/constants/messages.js	100% <ø> (ø)	⬆️
app/localShortcuts.js	24.44% <ø> (+2.44%)	⬆️
js/stores/windowStore.js	30.61% <100%> (ø)	⬆️

[bsclifton]

Manually tested, works great! 😄 👍