If crashing within first 2min don't lose windows

[bbondy]

Fix #10349

Auditors: @bsclifton

This happens because a save would happen on init before the initial window state was present

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

[bsclifton]

++

[codecov-io]

Codecov Report

Merging #10381 into master will increase coverage by <.01%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master   #10381      +/-   ##
==========================================
+ Coverage   53.74%   53.75%   +<.01%     
==========================================
  Files         238      238              
  Lines       21046    21044       -2     
  Branches     3256     3256              
==========================================
+ Hits        11312    11313       +1     
+ Misses       9734     9731       -3

Flag	Coverage Δ
#unittest	53.75% <100%> (ø)	⬆️

Impacted Files	Coverage Δ
app/sessionStoreShutdown.js	85.8% <100%> (+1.73%)	⬆️