fix: support files with spaces in `generateImageID`

[pzerelles]

• Quick Checklist

• [x] 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, ...)

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• Other information:

[changeset-bot[bot]]

🦋 Changeset detected

Latest commit: fc62a418f41c6395d67be78c35f616687f8a35cd

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 |

Not sure what this means? Click here to learn what changesets are.

Click here if you're a maintainer who wants to add another changeset to this PR

[codecov[bot]]

Codecov Report

Attention: 1 lines in your changes are missing coverage. Please review.

Comparison is base (22ad3a9) 93.60% compared to head (3113847) 93.60%.

:exclamation: Current head 3113847 differs from pull request most recent head fc62a41. Consider uploading reports for the commit fc62a41 to get more accurate results

Files	Patch %	Lines
packages/vite/src/utils.ts	0.00%	1 Missing :warning:

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #669 +/- ## ======================================= Coverage 93.60% 93.60% ======================================= Files 32 32 Lines 1189 1189 Branches 189 189 ======================================= Hits 1113 1113 Misses 76 76 ``` | [Flag](https://app.codecov.io/gh/JonasKruckenberg/imagetools/pull/669/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jonas+Kruckenberg) | Coverage Δ | | |---|---|---| | [imagetools-core](https://app.codecov.io/gh/JonasKruckenberg/imagetools/pull/669/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jonas+Kruckenberg) | `97.01% <ø> (ø)` | | | [vite-imagetools](https://app.codecov.io/gh/JonasKruckenberg/imagetools/pull/669/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jonas+Kruckenberg) | `78.44% <0.00%> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=Jonas+Kruckenberg#carryforward-flags-in-the-pull-request-comment) to find out more.

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[benmccann]

@pzerelles is this PR still necessary if https://github.com/vitejs/vite/pull/15311 is merged?

[pzerelles]

@pzerelles is this PR still necessary if vitejs/vite#15311 is merged?

Yes