fix(modern): modulepreload not work in generate

[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

This issue is reported by @kevinmarrec , it happened when we use generate and modern: true, as modern detection will be before building in generate, so this pr is excluding disalbing modern from static target.

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-commenter]

Codecov Report

Merging #7498 into dev will decrease coverage by 0.40%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##              dev    #7498      +/-   ##
==========================================
- Coverage   70.58%   70.18%   -0.41%     
==========================================
  Files          88       88              
  Lines        3604     3733     +129     
  Branches      977     1015      +38     
==========================================
+ Hits         2544     2620      +76     
- Misses        859      905      +46     
- Partials      201      208       +7     

Flag	Coverage Δ
#unittests	70.18% <0.00%> (-0.41%)	⬇️

Impacted Files	Coverage Δ
packages/vue-renderer/src/renderer.js	0.00% <0.00%> (ø)
packages/config/src/load.js	77.90% <0.00%> (-16.22%)	⬇️
packages/server/src/middleware/error.js	95.23% <0.00%> (-3.07%)	⬇️
packages/config/src/options.js	95.23% <0.00%> (-2.85%)	⬇️
packages/generator/src/generator.js	85.07% <0.00%> (-1.60%)	⬇️
packages/webpack/src/plugins/vue/client.js	3.63% <0.00%> (-1.02%)	⬇️
packages/builder/src/builder.js	90.17% <0.00%> (-0.24%)	⬇️
packages/utils/src/cjs.js	69.69% <0.00%> (ø)
packages/cli/src/utils/config.js	100.00% <0.00%> (ø)
packages/cli/src/commands/serve.js	72.41% <0.00%> (ø)
... and 9 more

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