refactor(webpack): simplify transpile normalization

[clarkdo]

Types of changes

• Bug fix (a non-breaking change which fixes an issue)
• New feature (a non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Description

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 #6179 into dev will increase coverage by 0.02%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##              dev    #6179      +/-   ##
==========================================
+ Coverage   95.75%   95.78%   +0.02%     
==========================================
  Files          80       80              
  Lines        2665     2655      -10     
  Branches      686      683       -3     
==========================================
- Hits         2552     2543       -9     
+ Misses         97       96       -1     
  Partials       16       16

Flag	Coverage Δ
#e2e	100% <ø> (ø)	⬆️
#fixtures	50.8% <83.33%> (-0.11%)	⬇️
#unit	92.46% <100%> (ø)	⬆️

Impacted Files	Coverage Δ
packages/webpack/src/config/base.js	94.89% <100%> (ø)	⬆️
packages/webpack/src/config/server.js	100% <100%> (ø)	⬆️
packages/vue-renderer/src/renderer.js	94.3% <0%> (+0.81%)	⬆️

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[galvez]

LGTM