fix: add html-to-image package to optimizeDeps

[KermanX]

Avoid reloading the page on the first start:

17:57:56 [vite] ✨ new dependencies optimized: html-to-image
17:57:56 [vite] ✨ optimized dependencies changed. reloading

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[pkg-pr-new]

Open in Stackblitz

create-slidev

pnpm add https://pkg.pr.new/slidevjs/slidev/create-slidev@1884

create-slidev-theme

pnpm add https://pkg.pr.new/slidevjs/slidev/create-slidev-theme@1884

@slidev/client

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/client@1884

@slidev/parser

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/parser@1884

@slidev/cli

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/cli@1884

@slidev/types

pnpm add https://pkg.pr.new/slidevjs/slidev/@slidev/types@1884

commit: f5c4fe1