Ensure that layer is closed before renaming file in layout

[ben-krieger]

Fixes #1253

[codecov-commenter]

Codecov Report

Merging #1254 (56d378f) into main (86ab606) will increase coverage by 0.03%.
The diff coverage is 40.00%.

@@            Coverage Diff             @@
##             main    #1254      +/-   ##
==========================================
+ Coverage   73.74%   73.77%   +0.03%     
==========================================
  Files         111      111              
  Lines        8283     8286       +3     
==========================================
+ Hits         6108     6113       +5     
+ Misses       1573     1571       -2     
  Partials      602      602              

Impacted Files	Coverage Δ
pkg/v1/layout/write.go	48.88% <40.00%> (-0.48%)	⬇️
pkg/v1/stream/layer.go	87.66% <0.00%> (+3.24%)	⬆️

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[imjasonh]

Nice! Thanks for the quick fix! 🙏