fix(webpack-plugin): Ensure asset relocator injected code works with nodeIntegration disabled

[timfish]

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Fixes #2395

[codecov]

Codecov Report

Merging #2396 (4fda813) into master (760382c) will increase coverage by 0.03%.
The diff coverage is 100.00%.

❗ Current head 4fda813 differs from pull request most recent head 2daf053. Consider uploading reports for the commit 2daf053 to get more accurate results

@@            Coverage Diff             @@
##           master    #2396      +/-   ##
==========================================
+ Coverage   72.61%   72.65%   +0.03%     
==========================================
  Files          91       91              
  Lines        2330     2333       +3     
  Branches      436      437       +1     
==========================================
+ Hits         1692     1695       +3     
  Misses        473      473              
  Partials      165      165              

Impacted Files	Coverage Δ
packages/plugin/webpack/src/WebpackConfig.ts	98.73% <ø> (ø)
...ges/plugin/webpack/src/util/AssetRelocatorPatch.ts	81.25% <100.00%> (+4.32%)	⬆️

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[malept]

This largely looks good to me. I just have a question about a potential refactor.