fix: revert templateFiles name

[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

Revert the variable name for preventing breaking change.

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.

[manniL]

(Just for transparency: This is a fix for an unreleased change. It won't be backported)

[codecov-io]

Codecov Report

Merging #4924 into dev will decrease coverage by 0.12%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##              dev    #4924      +/-   ##
==========================================
- Coverage   91.87%   91.74%   -0.13%     
==========================================
  Files          73       73              
  Lines        2412     2412              
  Branches      593      593              
==========================================
- Hits         2216     2213       -3     
- Misses        178      181       +3     
  Partials       18       18

Impacted Files	Coverage Δ
packages/builder/src/builder.js	88.98% <ø> (ø)	⬆️
packages/vue-renderer/src/renderer.js	94.56% <0%> (-1.64%)	⬇️

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