fix: filenames with spaces

[pzerelles]

• Quick Checklist

• I have read the contributing guidelines
• I have written new tests, as applicable (for bug fixes / features)
• Docs have been added / updated (for bug fixes / features)
• I have added a changeset, if applicable

• What kind of change does this PR introduce? (Bug fix, feature, docs update, ...)
  This is a bug fix to support image filenames with special characters like spaces.

• What is the new behavior (if this is a feature change)?
  Image asset filenames will not be URL-encoded on disk, only for rendering.

• Does this PR introduce a breaking change? (What changes might users need to make in their application due to this
  PR?)
  I think no.

• Other information:

[changeset-bot]

🦋 Changeset detected

Latest commit: 708b404

The changes in this PR will be included in the next version bump.

This PR includes changesets to release 1 package

Name	Type
vite-imagetools	Patch

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[codecov]

Codecov Report

Attention: 8 lines in your changes are missing coverage. Please review.

Comparison is base (fddbd1e) 93.60% compared to head (708b404) 93.24%.

Files	Patch %	Lines
packages/vite/src/index.ts	82.75%	5 Missing ⚠️
packages/vite/src/utils.ts	78.57%	3 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #670      +/-   ##
==========================================
- Coverage   93.60%   93.24%   -0.37%     
==========================================
  Files          32       32              
  Lines        1189     1228      +39     
  Branches      189      196       +7     
==========================================
+ Hits         1113     1145      +32     
- Misses         76       83       +7     

Flag	Coverage Δ
imagetools-core	97.01% <ø> (ø)
vite-imagetools	78.98% <81.39%> (+0.54%)	⬆️

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[benmccann]

This includes the change to #669, so we only need one

[benmccann]

I think we should probably not merge this workaround, but fix the underlying bug in Vite instead, which may be vitejs/vite#15298

[benmccann]

Closing in favor of vitejs/vite#15311