[EmailVerify] Logout on success to avoid cross-tab state confusion

[imnasnainaec]

Fixes #3951

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This change is 

[codecov]

Codecov Report

❌ Patch coverage is 66.66667% with 1 line in your changes missing coverage. Please review.
✅ Project coverage is 74.06%. Comparing base (e423df4) to head (ae7044f).
⚠️ Report is 48 commits behind head on master.

Files with missing lines	Patch %	Lines
src/components/Login/Redux/LoginActions.ts	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3953      +/-   ##
==========================================
- Coverage   74.08%   74.06%   -0.02%     
==========================================
  Files         292      292              
  Lines       10653    10653              
  Branches     1347     1347              
==========================================
- Hits         7892     7890       -2     
- Misses       2376     2378       +2     
  Partials      385      385              

Flag	Coverage Δ
backend	85.29% <ø> (ø)
frontend	65.64% <66.66%> (-0.04%)	⬇️

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[jasonleenaylor]

@jasonleenaylor reviewed 3 of 3 files at r1, all commit messages.
Reviewable status: complete! all files reviewed, all discussions resolved (waiting on @imnasnainaec)