fix: make vite optimize prebundle for dev

[hershelh]

Description

fixes #11005

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What is the purpose of this pull request?

• Bug fix
• New Feature
• Documentation update
• Other

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[bluwy]

Although a drastic change I think this shouldn't break things in practice and feels like a better default until we have better support for optimize in build + SSR, which we might need to extend the CLI further to support them.