fix(postcss): default to preset-env and cssnano last

[manniL]

Types of changes

• Bug fix (a non-breaking change which fixes an issue)

Description

Currently, cssnano is moved at the end of the Postcss plugin chain. This totally makes sense. However, as Nuxt includes postcss-preset-env by default which contains autoprefixer, it should come second last to apply prefixing to all previous plugin outputs (e.g. tailwindcss).

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly. (PR: #)
• I have added tests to cover my changes (if not applicable, please state why)
• All new and existing tests are passing.

[codecov-io]

Codecov Report

Merging #5215 into dev will increase coverage by 0.04%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##              dev    #5215      +/-   ##
==========================================
+ Coverage   96.28%   96.33%   +0.04%     
==========================================
  Files          73       73              
  Lines        2476     2481       +5     
  Branches      628      629       +1     
==========================================
+ Hits         2384     2390       +6     
+ Misses         77       76       -1     
  Partials       15       15

Impacted Files	Coverage Δ
packages/webpack/src/utils/postcss.js	92.59% <100%> (+0.75%)	⬆️
packages/vue-renderer/src/renderer.js	94.89% <0%> (+0.51%)	⬆️

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[pi0]

Nice find @manniL