Fix old-new value on recreate cache miss-match are swapped

[gaborbernat]

Resolves #2211.

[codecov]

Codecov Report

Merging #2212 (ec78f0f) into rewrite (957a280) will increase coverage by 0.00%.
The diff coverage is 100.00%.

@@           Coverage Diff            @@
##           rewrite    #2212   +/-   ##
========================================
  Coverage    99.85%   99.85%           
========================================
  Files          157      157           
  Lines         9016     9017    +1     
  Branches       942      942           
========================================
+ Hits          9003     9004    +1     
  Misses           3        3           
  Partials        10       10           

Flag	Coverage Δ
tests	99.85% <100.00%> (+<0.01%)	⬆️

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Impacted Files	Coverage Δ
src/tox/pytest.py	100.00% <100.00%> (ø)
src/tox/tox_env/python/api.py	99.30% <100.00%> (ø)
tests/tox_env/python/test_python_api.py	100.00% <100.00%> (ø)
.../tox_env/python/virtual_env/test_virtualenv_api.py	100.00% <100.00%> (ø)

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